15991152 has 40 divisors (see below), whose sum is σ = 43742736. Its totient is φ = 5016576.

The previous prime is 15991121. The next prime is 15991159. The reversal of 15991152 is 25119951.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (15991159) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8983 + ... + 10614.

Almost surely, 2^15991152 is an apocalyptic number.

15991152 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

15991152 is an abundant number, since it is smaller than the sum of its proper divisors (27751584).

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

15991152 is a wasteful number, since it uses less digits than its factorization.

15991152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19625 (or 19619 counting only the distinct ones).

The product of its digits is 4050, while the sum is 33.

The square root of 15991152 is about 3998.8938470532. The cubic root of 15991152 is about 251.9377523249.

The spelling of 15991152 in words is "fifteen million, nine hundred ninety-one thousand, one hundred fifty-two".