212633290 has 16 divisors (see below), whose sum is σ = 382947912. Its totient is φ = 85007104.

The previous prime is 212633287. The next prime is 212633327. The reversal of 212633290 is 92336212.

It can be written as a sum of positive squares in 4 ways, for example, as 114682681 + 97950609 = 10709^2 + 9897^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18342 + ... + 27598.

Almost surely, 2^212633290 is an apocalyptic number.

212633290 is a deficient number, since it is larger than the sum of its proper divisors (170314622).

212633290 is a wasteful number, since it uses less digits than its factorization.

212633290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11561.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 212633290 is about 14581.9508297073. The cubic root of 212633290 is about 596.8663380229.

The spelling of 212633290 in words is "two hundred twelve million, six hundred thirty-three thousand, two hundred ninety".