215023252 has 12 divisors (see below), whose sum is σ = 381445876. Its totient is φ = 106038720.

The previous prime is 215023217. The next prime is 215023271. The reversal of 215023252 is 252320512.

It can be written as a sum of positive squares in 2 ways, for example, as 47941776 + 167081476 = 6924^2 + 12926^2 .

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, 367899 + ... + 368482.

Almost surely, 2^215023252 is an apocalyptic number.

It is an amenable number.

215023252 is a deficient number, since it is larger than the sum of its proper divisors (166422624).

215023252 is a wasteful number, since it uses less digits than its factorization.

215023252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736458 (or 736456 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 22.

The square root of 215023252 is about 14663.6711637980. The cubic root of 215023252 is about 599.0942370475.

Adding to 215023252 its reverse (252320512), we get a palindrome (467343764).

The spelling of 215023252 in words is "two hundred fifteen million, twenty-three thousand, two hundred fifty-two".