815140272 has 40 divisors (see below), whose sum is σ = 2110978480. Its totient is φ = 271042560.

The previous prime is 815140267. The next prime is 815140289. The reversal of 815140272 is 272041518.

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, 1129 + ... + 40392.

It is an arithmetic number, because the mean of its divisors is an integer number (52774462).

Almost surely, 2^815140272 is an apocalyptic number.

It is an amenable number.

815140272 is an abundant number, since it is smaller than the sum of its proper divisors (1295838208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

815140272 is a wasteful number, since it uses less digits than its factorization.

815140272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41941 (or 41935 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 30.

The square root of 815140272 is about 28550.6614984662. The cubic root of 815140272 is about 934.1374496425.

The spelling of 815140272 in words is "eight hundred fifteen million, one hundred forty thousand, two hundred seventy-two".