215264212 has 6 divisors (see below), whose sum is σ = 376712378. Its totient is φ = 107632104.

The previous prime is 215264201. The next prime is 215264213. The reversal of 215264212 is 212462512.

215264212 is digitally balanced in base 3, 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 only one way, i.e., 163481796 + 51782416 = 12786^2 + 7196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (215264213) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26908023 + ... + 26908030.

Almost surely, 2^215264212 is an apocalyptic number.

It is an amenable number.

215264212 is a deficient number, since it is larger than the sum of its proper divisors (161448166).

215264212 is a wasteful number, since it uses less digits than its factorization.

215264212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53816057 (or 53816055 counting only the distinct ones).

The product of its digits is 1920, while the sum is 25.

The square root of 215264212 is about 14671.8850867910. The cubic root of 215264212 is about 599.3179397650.

The spelling of 215264212 in words is "two hundred fifteen million, two hundred sixty-four thousand, two hundred twelve".