215809482 has 16 divisors (see below), whose sum is σ = 493278912. Its totient is φ = 61659840.

The previous prime is 215809463. The next prime is 215809553. The reversal of 215809482 is 284908512.

It is a super-2 number, since 2×215809482² = 93147465042216648, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 215809482.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2569119 + ... + 2569202.

It is an arithmetic number, because the mean of its divisors is an integer number (30829932).

Almost surely, 2^215809482 is an apocalyptic number.

215809482 is an abundant number, since it is smaller than the sum of its proper divisors (277469430).

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

215809482 is a wasteful number, since it uses less digits than its factorization.

215809482 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5138333.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 215809482 is about 14690.4554728572. The cubic root of 215809482 is about 599.8235425541.

The spelling of 215809482 in words is "two hundred fifteen million, eight hundred nine thousand, four hundred eighty-two".