15696140 has 24 divisors (see below), whose sum is σ = 33854352. Its totient is φ = 6108480.

The previous prime is 15696133. The next prime is 15696179. The reversal of 15696140 is 4169651.

It is a junction number, because it is equal to n+sod(n) for n = 15696097 and 15696106.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 9866 + ... + 11345.

It is an arithmetic number, because the mean of its divisors is an integer number (1410598).

Almost surely, 2^15696140 is an apocalyptic number.

15696140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

15696140 is an abundant number, since it is smaller than the sum of its proper divisors (18158212).

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

15696140 is a wasteful number, since it uses less digits than its factorization.

15696140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21257 (or 21255 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 15696140 is about 3961.8354332304. The cubic root of 15696140 is about 250.3788389675.

The spelling of 15696140 in words is "fifteen million, six hundred ninety-six thousand, one hundred forty".