215088828 has 72 divisors (see below), whose sum is σ = 538969200. Its totient is φ = 66742272.

The previous prime is 215088817. The next prime is 215088857. The reversal of 215088828 is 828880512.

It is a self number, because there is not a number n which added to its sum of digits gives 215088828.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 377728 + ... + 378296.

Almost surely, 2^215088828 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 215088828, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (269484600).

215088828 is an abundant number, since it is smaller than the sum of its proper divisors (323880372).

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

215088828 is a wasteful number, since it uses less digits than its factorization.

215088828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 700 counting only the distinct ones).

The product of its (nonzero) digits is 81920, while the sum is 42.

The square root of 215088828 is about 14665.9069954776. The cubic root of 215088828 is about 599.1551331139.

The spelling of 215088828 in words is "two hundred fifteen million, eighty-eight thousand, eight hundred twenty-eight".