815372427 has 8 divisors (see below), whose sum is σ = 1095462720. Its totient is φ = 539431880.

The previous prime is 815372417. The next prime is 815372431. The reversal of 815372427 is 724273518.

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

It is a cyclic number.

It is not a de Polignac number, because 815372427 - 2²⁴ = 798595211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (815372417) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1036977 + ... + 1037762.

It is an arithmetic number, because the mean of its divisors is an integer number (136932840).

Almost surely, 2^815372427 is an apocalyptic number.

815372427 is a deficient number, since it is larger than the sum of its proper divisors (280090293).

815372427 is a wasteful number, since it uses less digits than its factorization.

815372427 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2074873.

The product of its digits is 94080, while the sum is 39.

The square root of 815372427 is about 28554.7268766486. The cubic root of 815372427 is about 934.2261231720.

The spelling of 815372427 in words is "eight hundred fifteen million, three hundred seventy-two thousand, four hundred twenty-seven".