215245752 has 16 divisors (see below), whose sum is σ = 538114440. Its totient is φ = 71748576.

The previous prime is 215245739. The next prime is 215245781. The reversal of 215245752 is 257542512.

215245752 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4484263 + ... + 4484310.

Almost surely, 2^215245752 is an apocalyptic number.

It is an amenable number.

215245752 is an abundant number, since it is smaller than the sum of its proper divisors (322868688).

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

215245752 is a wasteful number, since it uses less digits than its factorization.

215245752 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8968582 (or 8968578 counting only the distinct ones).

The product of its digits is 28000, while the sum is 33.

The square root of 215245752 is about 14671.2559789542. The cubic root of 215245752 is about 599.3008077557.

The spelling of 215245752 in words is "two hundred fifteen million, two hundred forty-five thousand, seven hundred fifty-two".