16933987 has 8 divisors (see below), whose sum is σ = 19430496. Its totient is φ = 14456832.

The previous prime is 16933981. The next prime is 16933991. The reversal of 16933987 is 78933961.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 16933987 - 2³ = 16933979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16933981) 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, 2908 + ... + 6505.

It is an arithmetic number, because the mean of its divisors is an integer number (2428812).

Almost surely, 2^16933987 is an apocalyptic number.

16933987 is a deficient number, since it is larger than the sum of its proper divisors (2496509).

16933987 is an equidigital number, since it uses as much as digits as its factorization.

16933987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9677.

The product of its digits is 244944, while the sum is 46.

The square root of 16933987 is about 4115.0925870507. The cubic root of 16933987 is about 256.7949077108.

It can be divided in two parts, 16933 and 987, that multiplied together give a triangular number (16712871 = T₅₇₈₁).

The spelling of 16933987 in words is "sixteen million, nine hundred thirty-three thousand, nine hundred eighty-seven".