215415930 has 32 divisors (see below), whose sum is σ = 539478144. Its totient is φ = 54946496.

The previous prime is 215415929. The next prime is 215415943. The reversal of 215415930 is 39514512.

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

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 155409 + ... + 156788.

It is an arithmetic number, because the mean of its divisors is an integer number (16858692).

Almost surely, 2^215415930 is an apocalyptic number.

215415930 is an abundant number, since it is smaller than the sum of its proper divisors (324062214).

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

215415930 is a wasteful number, since it uses less digits than its factorization.

215415930 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312230.

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 215415930 is about 14677.0545410174. The cubic root of 215415930 is about 599.4587062598.

The spelling of 215415930 in words is "two hundred fifteen million, four hundred fifteen thousand, nine hundred thirty".