15930642 has 64 divisors (see below), whose sum is σ = 39674880. Its totient is φ = 4152384.

The previous prime is 15930641. The next prime is 15930647. The reversal of 15930642 is 24603951.

It is not an unprimeable number, because it can be changed into a prime (15930641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 88909 + ... + 89087.

It is an arithmetic number, because the mean of its divisors is an integer number (619920).

Almost surely, 2^15930642 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15930642, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (19837440).

15930642 is an abundant number, since it is smaller than the sum of its proper divisors (23744238).

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

15930642 is a wasteful number, since it uses less digits than its factorization.

15930642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 15930642 is about 3991.3208340097. The cubic root of 15930642 is about 251.6195759052.

The spelling of 15930642 in words is "fifteen million, nine hundred thirty thousand, six hundred forty-two".