72801070 has 16 divisors (see below), whose sum is σ = 131174928. Its totient is φ = 29090880.

The previous prime is 72801067. The next prime is 72801137. The reversal of 72801070 is 7010827.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8602 + ... + 14818.

It is an arithmetic number, because the mean of its divisors is an integer number (8198433).

Almost surely, 2^72801070 is an apocalyptic number.

72801070 is a deficient number, since it is larger than the sum of its proper divisors (58373858).

72801070 is a wasteful number, since it uses less digits than its factorization.

72801070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7395.

The product of its (nonzero) digits is 784, while the sum is 25.

The square root of 72801070 is about 8532.3543058174. The cubic root of 72801070 is about 417.5539414211.

Adding to 72801070 its reverse (7010827), we get a palindrome (79811897).

The spelling of 72801070 in words is "seventy-two million, eight hundred one thousand, seventy".