72801370 has 8 divisors (see below), whose sum is σ = 131042484. Its totient is φ = 29120544.

The previous prime is 72801359. The next prime is 72801401. The reversal of 72801370 is 7310827.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 72777961 + 23409 = 8531^2 + 153^2 .

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, 3640059 + ... + 3640078.

Almost surely, 2^72801370 is an apocalyptic number.

72801370 is a deficient number, since it is larger than the sum of its proper divisors (58241114).

72801370 is a wasteful number, since it uses less digits than its factorization.

72801370 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7280144.

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

The square root of 72801370 is about 8532.3718859412. The cubic root of 72801370 is about 417.5545149749.

The spelling of 72801370 in words is "seventy-two million, eight hundred one thousand, three hundred seventy".