215242996 has 12 divisors (see below), whose sum is σ = 376778052. Its totient is φ = 107592128.

The previous prime is 215242991. The next prime is 215242997. The reversal of 215242996 is 699242512.

215242996 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 160275600 + 54967396 = 12660^2 + 7414^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215242991) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24216 + ... + 31888.

It is an arithmetic number, because the mean of its divisors is an integer number (31398171).

Almost surely, 2^215242996 is an apocalyptic number.

It is an amenable number.

215242996 is a deficient number, since it is larger than the sum of its proper divisors (161535056).

215242996 is a wasteful number, since it uses less digits than its factorization.

215242996 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14690 (or 14688 counting only the distinct ones).

The product of its digits is 77760, while the sum is 40.

The square root of 215242996 is about 14671.1620534980. The cubic root of 215242996 is about 599.2982499351.

The spelling of 215242996 in words is "two hundred fifteen million, two hundred forty-two thousand, nine hundred ninety-six".