213688832 has 80 divisors (see below), whose sum is σ = 493331520. Its totient is φ = 90574848.

The previous prime is 213688829. The next prime is 213688879. The reversal of 213688832 is 238886312.

It is a self number, because there is not a number n which added to its sum of digits gives 213688832.

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, 390383 + ... + 390929.

It is an arithmetic number, because the mean of its divisors is an integer number (6166644).

Almost surely, 2^213688832 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 213688832, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (246665760).

213688832 is an abundant number, since it is smaller than the sum of its proper divisors (279642688).

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

213688832 is an equidigital number, since it uses as much as digits as its factorization.

213688832 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 681 (or 665 counting only the distinct ones).

The product of its digits is 110592, while the sum is 41.

The square root of 213688832 is about 14618.0994660729. The cubic root of 213688832 is about 597.8523514780.

The spelling of 213688832 in words is "two hundred thirteen million, six hundred eighty-eight thousand, eight hundred thirty-two".