16978936 has 16 divisors (see below), whose sum is σ = 34284600. Its totient is φ = 7836384.

The previous prime is 16978933. The next prime is 16978957. The reversal of 16978936 is 63987961.

It is a self number, because there is not a number n which added to its sum of digits gives 16978936.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16978931) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 81526 + ... + 81733.

Almost surely, 2^16978936 is an apocalyptic number.

It is an amenable number.

16978936 is an abundant number, since it is smaller than the sum of its proper divisors (17305664).

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

16978936 is a wasteful number, since it uses less digits than its factorization.

16978936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163278 (or 163274 counting only the distinct ones).

The product of its digits is 489888, while the sum is 49.

The square root of 16978936 is about 4120.5504486658. The cubic root of 16978936 is about 257.0219162019.

The spelling of 16978936 in words is "sixteen million, nine hundred seventy-eight thousand, nine hundred thirty-six".