815612488 has 32 divisors (see below), whose sum is σ = 1543268160. Its totient is φ = 404089920.

The previous prime is 815612477. The next prime is 815612489. The reversal of 815612488 is 884216518.

It is not an unprimeable number, because it can be changed into a prime (815612489) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 631123 + ... + 632413.

It is an arithmetic number, because the mean of its divisors is an integer number (48227130).

Almost surely, 2^815612488 is an apocalyptic number.

It is an amenable number.

815612488 is a deficient number, since it is larger than the sum of its proper divisors (727655672).

815612488 is a wasteful number, since it uses less digits than its factorization.

815612488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957 (or 1953 counting only the distinct ones).

The product of its digits is 122880, while the sum is 43.

The square root of 815612488 is about 28558.9300920045. The cubic root of 815612488 is about 934.3177987645.

It can be divided in two parts, 8156 and 12488, that multiplied together give a triangular number (101852128 = T₁₄₂₇₂).

The spelling of 815612488 in words is "eight hundred fifteen million, six hundred twelve thousand, four hundred eighty-eight".