215933952 has 88 divisors (see below), whose sum is σ = 619929856. Its totient is φ = 66428928.

The previous prime is 215933903. The next prime is 215933953. The reversal of 215933952 is 259339512.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a self number, because there is not a number n which added to its sum of digits gives 215933952.

It is not an unprimeable number, because it can be changed into a prime (215933953) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37233 + ... + 42639.

Almost surely, 2^215933952 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 215933952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (309964928).

215933952 is an abundant number, since it is smaller than the sum of its proper divisors (403995904).

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

215933952 is a wasteful number, since it uses less digits than its factorization.

215933952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5443 (or 5425 counting only the distinct ones).

The product of its digits is 72900, while the sum is 39.

The square root of 215933952 is about 14694.6912863115. The cubic root of 215933952 is about 599.9388382100.

The spelling of 215933952 in words is "two hundred fifteen million, nine hundred thirty-three thousand, nine hundred fifty-two".