215473460 has 24 divisors (see below), whose sum is σ = 454307616. Its totient is φ = 85844000.

The previous prime is 215473439. The next prime is 215473477. The reversal of 215473460 is 64374512.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16442 + ... + 26481.

It is an arithmetic number, because the mean of its divisors is an integer number (18929484).

Almost surely, 2^215473460 is an apocalyptic number.

215473460 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215473460 is an abundant number, since it is smaller than the sum of its proper divisors (238834156).

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

215473460 is a wasteful number, since it uses less digits than its factorization.

215473460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43183 (or 43181 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 32.

The square root of 215473460 is about 14679.0142720824. The cubic root of 215473460 is about 599.5120662717.

The spelling of 215473460 in words is "two hundred fifteen million, four hundred seventy-three thousand, four hundred sixty".