72170416 has 10 divisors (see below), whose sum is σ = 139830212. Its totient is φ = 36085200.

The previous prime is 72170353. The next prime is 72170431. The reversal of 72170416 is 61407127.

It is a super-2 number, since 2×72170416² = 10417137891226112, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2255310 + ... + 2255341.

Almost surely, 2^72170416 is an apocalyptic number.

It is an amenable number.

72170416 is a deficient number, since it is larger than the sum of its proper divisors (67659796).

72170416 is a wasteful number, since it uses less digits than its factorization.

72170416 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4510659 (or 4510653 counting only the distinct ones).

The product of its (nonzero) digits is 2352, while the sum is 28.

The square root of 72170416 is about 8495.3172983709. The cubic root of 72170416 is about 416.3447278147.

The spelling of 72170416 in words is "seventy-two million, one hundred seventy thousand, four hundred sixteen".