215696896 has 80 divisors (see below), whose sum is σ = 454212000. Its totient is φ = 102187008.

The previous prime is 215696891. The next prime is 215696933. The reversal of 215696896 is 698696512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215696891) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1083805 + ... + 1084003.

It is an arithmetic number, because the mean of its divisors is an integer number (5677650).

Almost surely, 2^215696896 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 215696896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227106000).

215696896 is an abundant number, since it is smaller than the sum of its proper divisors (238515104).

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

215696896 is an equidigital number, since it uses as much as digits as its factorization.

215696896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319 (or 303 counting only the distinct ones).

The product of its digits is 1399680, while the sum is 52.

The square root of 215696896 is about 14686.6230291378. The cubic root of 215696896 is about 599.7192167699.

The spelling of 215696896 in words is "two hundred fifteen million, six hundred ninety-six thousand, eight hundred ninety-six".