215473260 has 48 divisors (see below), whose sum is σ = 606688992. Its totient is φ = 57139200.

The previous prime is 215473241. The next prime is 215473261. The reversal of 215473260 is 62374512.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is not an unprimeable number, because it can be changed into a prime (215473261) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 940 + ... + 20780.

It is an arithmetic number, because the mean of its divisors is an integer number (12639354).

Almost surely, 2^215473260 is an apocalyptic number.

215473260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

215473260 is an abundant number, since it is smaller than the sum of its proper divisors (391215732).

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

215473260 is a wasteful number, since it uses less digits than its factorization.

215473260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20034 (or 20032 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 30.

The square root of 215473260 is about 14679.0074596343. The cubic root of 215473260 is about 599.5118807848.

The spelling of 215473260 in words is "two hundred fifteen million, four hundred seventy-three thousand, two hundred sixty".