215899130 has 32 divisors (see below), whose sum is σ = 404224128. Its totient is φ = 82958400.

The previous prime is 215899129. The next prime is 215899141. The reversal of 215899130 is 31998512.

It is a super-2 number, since 2×215899130² = 93224868669513800, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22115 + ... + 30345.

It is an arithmetic number, because the mean of its divisors is an integer number (12632004).

Almost surely, 2^215899130 is an apocalyptic number.

215899130 is a deficient number, since it is larger than the sum of its proper divisors (188324998).

215899130 is a wasteful number, since it uses less digits than its factorization.

215899130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8342.

The product of its (nonzero) digits is 19440, while the sum is 38.

The square root of 215899130 is about 14693.5063888780. The cubic root of 215899130 is about 599.9065873094.

The spelling of 215899130 in words is "two hundred fifteen million, eight hundred ninety-nine thousand, one hundred thirty".