215920896 has 72 divisors (see below), whose sum is σ = 577389120. Its totient is φ = 71632896.

The previous prime is 215920891. The next prime is 215920897. The reversal of 215920896 is 698029512.

It is not an unprimeable number, because it can be changed into a prime (215920891) 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, 201450 + ... + 202518.

Almost surely, 2^215920896 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 215920896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (288694560).

215920896 is an abundant number, since it is smaller than the sum of its proper divisors (361468224).

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

215920896 is a wasteful number, since it uses less digits than its factorization.

215920896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1351 (or 1337 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 42.

The square root of 215920896 is about 14694.2470375314. The cubic root of 215920896 is about 599.9267466125.

The spelling of 215920896 in words is "two hundred fifteen million, nine hundred twenty thousand, eight hundred ninety-six".