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23057541 = 3713811
BaseRepresentation
bin101011111110…
…1010010000101
31121101110000000
41113331102011
521400320131
62142111513
7366662103
oct127752205
947343000
1023057541
1112019521
12787b599
134a14020
1430c2c73
152056ce6
hex15fd485

23057541 has 32 divisors (see below), whose sum is σ = 37287040. Its totient is φ = 14171760.

The previous prime is 23057513. The next prime is 23057543. The reversal of 23057541 is 14575032.

It is a happy number.

It is not a de Polignac number, because 23057541 - 27 = 23057413 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23057543) 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, 28026 + ... + 28836.

It is an arithmetic number, because the mean of its divisors is an integer number (1165220).

Almost surely, 223057541 is an apocalyptic number.

It is an amenable number.

23057541 is a deficient number, since it is larger than the sum of its proper divisors (14229499).

23057541 is an frugal number, since it uses more digits than its factorization.

23057541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 845 (or 827 counting only the distinct ones).

The product of its (nonzero) digits is 4200, while the sum is 27.

The square root of 23057541 is about 4801.8268398600. The cubic root of 23057541 is about 284.6236583855.

The spelling of 23057541 in words is "twenty-three million, fifty-seven thousand, five hundred forty-one".

Divisors: 1 3 9 13 27 39 81 117 243 351 729 811 1053 2187 2433 3159 7299 9477 10543 21897 28431 31629 65691 94887 197073 284661 591219 853983 1773657 2561949 7685847 23057541