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23142030 = 235771401
BaseRepresentation
bin101100001000…
…1111010001110
31121112201220020
41120101322032
521411021110
62144003010
7400463322
oct130217216
947481806
1023142030
1112076a4a
127900466
134a43612
143105982
152071d70
hex1611e8e

23142030 has 16 divisors (see below), whose sum is σ = 55540944. Its totient is φ = 6171200.

The previous prime is 23142017. The next prime is 23142107. The reversal of 23142030 is 3024132.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 385671 + ... + 385730.

It is an arithmetic number, because the mean of its divisors is an integer number (3471309).

Almost surely, 223142030 is an apocalyptic number.

23142030 is an abundant number, since it is smaller than the sum of its proper divisors (32398914).

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

23142030 is a wasteful number, since it uses less digits than its factorization.

23142030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771411.

The product of its (nonzero) digits is 144, while the sum is 15.

The square root of 23142030 is about 4810.6163846227. The cubic root of 23142030 is about 284.9708803736.

Adding to 23142030 its reverse (3024132), we get a palindrome (26166162).

The spelling of 23142030 in words is "twenty-three million, one hundred forty-two thousand, thirty".

Divisors: 1 2 3 5 6 10 15 30 771401 1542802 2314203 3857005 4628406 7714010 11571015 23142030