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23137829 = 1113239677
BaseRepresentation
bin101100001000…
…0111000100101
31121112112010122
41120100320211
521410402304
62143531325
7400445141
oct130207045
947475118
1023137829
1112073880
1278b9b45
134a41730
143104221
1520709be
hex1610e25

23137829 has 16 divisors (see below), whose sum is σ = 27336960. Its totient is φ = 19306560.

The previous prime is 23137823. The next prime is 23137831. The reversal of 23137829 is 92873132.

It is not a de Polignac number, because 23137829 - 216 = 23072293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23137823) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33839 + ... + 34515.

It is an arithmetic number, because the mean of its divisors is an integer number (1708560).

Almost surely, 223137829 is an apocalyptic number.

It is an amenable number.

23137829 is a deficient number, since it is larger than the sum of its proper divisors (4199131).

23137829 is a wasteful number, since it uses less digits than its factorization.

23137829 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 940.

The product of its digits is 18144, while the sum is 35.

The square root of 23137829 is about 4810.1797263720. The cubic root of 23137829 is about 284.9536356300.

The spelling of 23137829 in words is "twenty-three million, one hundred thirty-seven thousand, eight hundred twenty-nine".

Divisors: 1 11 13 143 239 677 2629 3107 7447 8801 34177 96811 161803 1779833 2103439 23137829