16972040 has 32 divisors (see below), whose sum is σ = 38574360. Its totient is φ = 6720000.

The previous prime is 16972037. The next prime is 16972051. The reversal of 16972040 is 4027961.

It can be written as a sum of positive squares in 4 ways, for example, as 13853284 + 3118756 = 3722^2 + 1766^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16971994 and 16972012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1940 + ... + 6140.

Almost surely, 2^16972040 is an apocalyptic number.

16972040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16972040 is an abundant number, since it is smaller than the sum of its proper divisors (21602320).

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

16972040 is a wasteful number, since it uses less digits than its factorization.

16972040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4313 (or 4309 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 16972040 is about 4119.7135822773. The cubic root of 16972040 is about 256.9871149803.

The spelling of 16972040 in words is "sixteen million, nine hundred seventy-two thousand, forty".