16979240 has 16 divisors (see below), whose sum is σ = 38203380. Its totient is φ = 6791680.

The previous prime is 16979231. The next prime is 16979251. The reversal of 16979240 is 4297961.

It can be written as a sum of positive squares in 2 ways, for example, as 16957924 + 21316 = 4118^2 + 146^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16979194 and 16979203.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 212201 + ... + 212280.

Almost surely, 2^16979240 is an apocalyptic number.

16979240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16979240 is an abundant number, since it is smaller than the sum of its proper divisors (21224140).

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

16979240 is a wasteful number, since it uses less digits than its factorization.

16979240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 424492 (or 424488 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 16979240 is about 4120.5873367762. The cubic root of 16979240 is about 257.0234501456.

The spelling of 16979240 in words is "sixteen million, nine hundred seventy-nine thousand, two hundred forty".