16255987 has 12 divisors (see below), whose sum is σ = 18356128. Its totient is φ = 14374800.

The previous prime is 16255949. The next prime is 16255991. The reversal of 16255987 is 78955261.

It is a de Polignac number, because none of the positive numbers 2^k-16255987 is a prime.

It is a super-2 number, since 2×16255987² = 528514226688338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16255387) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2662 + ... + 6292.

Almost surely, 2^16255987 is an apocalyptic number.

16255987 is a deficient number, since it is larger than the sum of its proper divisors (2100141).

16255987 is a wasteful number, since it uses less digits than its factorization.

16255987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3690 (or 3679 counting only the distinct ones).

The product of its digits is 151200, while the sum is 43.

The square root of 16255987 is about 4031.8714017191. The cubic root of 16255987 is about 253.3209537272.

The spelling of 16255987 in words is "sixteen million, two hundred fifty-five thousand, nine hundred eighty-seven".