15913920 has 168 divisors, whose sum is σ = 55942992. Its totient is φ = 3829760.

The previous prime is 15913841. The next prime is 15913951. The reversal of 15913920 is 2931951.

15913920 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 116092 + ... + 116228.

It is an arithmetic number, because the mean of its divisors is an integer number (332994).

Almost surely, 2^15913920 is an apocalyptic number.

15913920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 15913920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27971496).

15913920 is an abundant number, since it is smaller than the sum of its proper divisors (40029072).

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

15913920 is a wasteful number, since it uses less digits than its factorization.

15913920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 179 (or 158 counting only the distinct ones).

The product of its (nonzero) digits is 2430, while the sum is 30.

The square root of 15913920 is about 3989.2254887384. The cubic root of 15913920 is about 251.5315054724.

The spelling of 15913920 in words is "fifteen million, nine hundred thirteen thousand, nine hundred twenty".