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20233230 = 2351797409
BaseRepresentation
bin100110100101…
…1110000001110
31102001221202220
41031023300032
520134430410
62001400210
7333660003
oct115136016
942057686
1020233230
111046a586
126939066
134265634
1429898aa
151b9a070
hex134bc0e

20233230 has 64 divisors (see below), whose sum is σ = 52073280. Its totient is φ = 5013504.

The previous prime is 20233207. The next prime is 20233231. The reversal of 20233230 is 3233202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20233231) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 49266 + ... + 49674.

It is an arithmetic number, because the mean of its divisors is an integer number (813645).

Almost surely, 220233230 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20233230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26036640).

20233230 is an abundant number, since it is smaller than the sum of its proper divisors (31840050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20233230 is a wasteful number, since it uses less digits than its factorization.

20233230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533.

The product of its (nonzero) digits is 216, while the sum is 15.

The square root of 20233230 is about 4498.1362807278. The cubic root of 20233230 is about 272.4928258920.

Adding to 20233230 its reverse (3233202), we get a palindrome (23466432).

It can be divided in two parts, 2023 and 3230, that added together give a triangular number (5253 = T102).

The spelling of 20233230 in words is "twenty million, two hundred thirty-three thousand, two hundred thirty".

Divisors: 1 2 3 5 6 10 15 17 30 34 51 85 97 102 170 194 255 291 409 485 510 582 818 970 1227 1455 1649 2045 2454 2910 3298 4090 4947 6135 6953 8245 9894 12270 13906 16490 20859 24735 34765 39673 41718 49470 69530 79346 104295 119019 198365 208590 238038 396730 595095 674441 1190190 1348882 2023323 3372205 4046646 6744410 10116615 20233230