215094990 has 32 divisors (see below), whose sum is σ = 563158656. Its totient is φ = 52144160.

The previous prime is 215094989. The next prime is 215095009. The reversal of 215094990 is 99490512.

215094990 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 325572 + ... + 326231.

It is an arithmetic number, because the mean of its divisors is an integer number (17598708).

Almost surely, 2^215094990 is an apocalyptic number.

215094990 is an abundant number, since it is smaller than the sum of its proper divisors (348063666).

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

215094990 is a wasteful number, since it uses less digits than its factorization.

215094990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 651824.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 215094990 is about 14666.1170730361. The cubic root of 215094990 is about 599.1608547169.

The spelling of 215094990 in words is "two hundred fifteen million, ninety-four thousand, nine hundred ninety".