72390698 has 8 divisors (see below), whose sum is σ = 108715908. Its totient is φ = 36152064.

The previous prime is 72390697. The next prime is 72390701. The reversal of 72390698 is 89609327.

It can be written as a sum of positive squares in 2 ways, for example, as 68442529 + 3948169 = 8273^2 + 1987^2 .

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

It is not an unprimeable number, because it can be changed into a prime (72390697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19511 + ... + 22922.

Almost surely, 2^72390698 is an apocalyptic number.

72390698 is a deficient number, since it is larger than the sum of its proper divisors (36325210).

72390698 is a wasteful number, since it uses less digits than its factorization.

72390698 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43288.

The product of its (nonzero) digits is 163296, while the sum is 44.

The square root of 72390698 is about 8508.2723275645. The cubic root of 72390698 is about 416.7678933434.

The spelling of 72390698 in words is "seventy-two million, three hundred ninety thousand, six hundred ninety-eight".