47902815 has 12 divisors (see below), whose sum is σ = 83031624. Its totient is φ = 25548144.

The previous prime is 47902783. The next prime is 47902837. The reversal of 47902815 is 51820974.

It is not a de Polignac number, because 47902815 - 2⁵ = 47902783 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47902815.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 532209 + ... + 532298.

It is an arithmetic number, because the mean of its divisors is an integer number (6919302).

Almost surely, 2^47902815 is an apocalyptic number.

47902815 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

47902815 is a deficient number, since it is larger than the sum of its proper divisors (35128809).

47902815 is a wasteful number, since it uses less digits than its factorization.

47902815 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064518 (or 1064515 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 36.

The square root of 47902815 is about 6921.1859532886. The cubic root of 47902815 is about 363.1786794226.

The spelling of 47902815 in words is "forty-seven million, nine hundred two thousand, eight hundred fifteen".