15906345 has 64 divisors (see below), whose sum is σ = 32169984. Its totient is φ = 6531840.

The previous prime is 15906329. The next prime is 15906349. The reversal of 15906345 is 54360951.

It is a happy number.

It is not a de Polignac number, because 15906345 - 2⁴ = 15906329 is a prime.

It is a super-2 number, since 2×15906345² = 506023622518050, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (15906349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 58560 + ... + 58830.

It is an arithmetic number, because the mean of its divisors is an integer number (502656).

Almost surely, 2^15906345 is an apocalyptic number.

15906345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

15906345 is an abundant number, since it is smaller than the sum of its proper divisors (16263639).

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

15906345 is a wasteful number, since it uses less digits than its factorization.

15906345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 15906345 is about 3988.2759433118. The cubic root of 15906345 is about 251.4915896095.

The spelling of 15906345 in words is "fifteen million, nine hundred six thousand, three hundred forty-five".