16972380 has 36 divisors (see below), whose sum is σ = 51483432. Its totient is φ = 4525920.

The previous prime is 16972379. The next prime is 16972391. The reversal of 16972380 is 8327961.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46966 + ... + 47325.

Almost surely, 2^16972380 is an apocalyptic number.

16972380 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16972380 is an abundant number, since it is smaller than the sum of its proper divisors (34511052).

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

16972380 is a wasteful number, since it uses less digits than its factorization.

16972380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94306 (or 94301 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 36.

The square root of 16972380 is about 4119.7548470752. The cubic root of 16972380 is about 256.9888310387.

The spelling of 16972380 in words is "sixteen million, nine hundred seventy-two thousand, three hundred eighty".