213515000 has 40 divisors (see below), whose sum is σ = 500277360. Its totient is φ = 85404000.

The previous prime is 213514993. The next prime is 213515017. The reversal of 213515000 is 515312.

It is a tau number, because it is divible by the number of its divisors (40).

It is a self number, because there is not a number n which added to its sum of digits gives 213515000.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 16352 + ... + 26351.

It is an arithmetic number, because the mean of its divisors is an integer number (12506934).

Almost surely, 2^213515000 is an apocalyptic number.

213515000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213515000 is an abundant number, since it is smaller than the sum of its proper divisors (286762360).

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

213515000 is an equidigital number, since it uses as much as digits as its factorization.

213515000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42729 (or 42710 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 17.

The square root of 213515000 is about 14612.1524766203. The cubic root of 213515000 is about 597.6901934742.

The spelling of 213515000 in words is "two hundred thirteen million, five hundred fifteen thousand".