72170498 has 8 divisors (see below), whose sum is σ = 111181692. Its totient is φ = 35109936.

The previous prime is 72170489. The next prime is 72170507. The reversal of 72170498 is 89407127.

It is an interprime number because it is at equal distance from previous prime (72170489) and next prime (72170507).

It can be written as a sum of positive squares in 2 ways, for example, as 68773849 + 3396649 = 8293^2 + 1843^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

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, 487565 + ... + 487712.

Almost surely, 2^72170498 is an apocalyptic number.

72170498 is a deficient number, since it is larger than the sum of its proper divisors (39011194).

72170498 is a wasteful number, since it uses less digits than its factorization.

72170498 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 975316.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 72170498 is about 8495.3221245577. The cubic root of 72170498 is about 416.3448854983.

The spelling of 72170498 in words is "seventy-two million, one hundred seventy thousand, four hundred ninety-eight".