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308230272 = 2734731137
BaseRepresentation
bin10010010111110…
…011100010000000
3210110222201110000
4102113303202000
51112401332042
650330240000
710431625350
oct2227634200
9713881400
10308230272
11148a95a69
1287286000
134bb1cc9c
142cd16b60
151c0d774c
hex125f3880

308230272 has 320 divisors, whose sum is σ = 1090045440. Its totient is φ = 84602880.

The previous prime is 308230243. The next prime is 308230297. The reversal of 308230272 is 272032803.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2249788 + ... + 2249924.

It is an arithmetic number, because the mean of its divisors is an integer number (3406392).

Almost surely, 2308230272 is an apocalyptic number.

308230272 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 308230272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (545022720).

308230272 is an abundant number, since it is smaller than the sum of its proper divisors (781815168).

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

308230272 is a wasteful number, since it uses less digits than its factorization.

308230272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201 (or 180 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 308230272 is about 17556.4880314942. The cubic root of 308230272 is about 675.4996005004.

The spelling of 308230272 in words is "three hundred eight million, two hundred thirty thousand, two hundred seventy-two".