212634404 has 12 divisors (see below), whose sum is σ = 372252300. Its totient is φ = 106276608.

The previous prime is 212634397. The next prime is 212634413. The reversal of 212634404 is 404436212.

It can be written as a sum of positive squares in 2 ways, for example, as 152571904 + 60062500 = 12352^2 + 7750^2 .

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, 3752 + ... + 20960.

It is an arithmetic number, because the mean of its divisors is an integer number (31021025).

Almost surely, 2^212634404 is an apocalyptic number.

It is an amenable number.

212634404 is a deficient number, since it is larger than the sum of its proper divisors (159617896).

212634404 is a wasteful number, since it uses less digits than its factorization.

212634404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20302 (or 20300 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 212634404 is about 14581.9890275641. The cubic root of 212634404 is about 596.8673803620.

The spelling of 212634404 in words is "two hundred twelve million, six hundred thirty-four thousand, four hundred four".