15651960 has 128 divisors (see below), whose sum is σ = 50388480. Its totient is φ = 3880448.

The previous prime is 15651959. The next prime is 15651971. The reversal of 15651960 is 6915651.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 146227 + ... + 146333.

It is an arithmetic number, because the mean of its divisors is an integer number (393660).

Almost surely, 2^15651960 is an apocalyptic number.

15651960 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 15651960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25194240).

15651960 is an abundant number, since it is smaller than the sum of its proper divisors (34736520).

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

15651960 is a wasteful number, since it uses less digits than its factorization.

15651960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 193 counting only the distinct ones).

The product of its (nonzero) digits is 8100, while the sum is 33.

The square root of 15651960 is about 3956.2558056829. The cubic root of 15651960 is about 250.1437040474.

The spelling of 15651960 in words is "fifteen million, six hundred fifty-one thousand, nine hundred sixty".