15961996 has 12 divisors (see below), whose sum is σ = 28041552. Its totient is φ = 7950128.

The previous prime is 15961973. The next prime is 15962003. The reversal of 15961996 is 69916951.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6535 + ... + 8638.

It is an arithmetic number, because the mean of its divisors is an integer number (2336796).

Almost surely, 2^15961996 is an apocalyptic number.

It is an amenable number.

15961996 is a deficient number, since it is larger than the sum of its proper divisors (12079556).

15961996 is a wasteful number, since it uses less digits than its factorization.

15961996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15440 (or 15438 counting only the distinct ones).

The product of its digits is 131220, while the sum is 46.

The square root of 15961996 is about 3995.2466757386. The cubic root of 15961996 is about 251.7845433111.

The spelling of 15961996 in words is "fifteen million, nine hundred sixty-one thousand, nine hundred ninety-six".