212812494 has 16 divisors (see below), whose sum is σ = 450661968. Its totient is φ = 66764672.

The previous prime is 212812487. The next prime is 212812517. The reversal of 212812494 is 494218212.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1043097 + ... + 1043300.

It is an arithmetic number, because the mean of its divisors is an integer number (28166373).

Almost surely, 2^212812494 is an apocalyptic number.

212812494 is an abundant number, since it is smaller than the sum of its proper divisors (237849474).

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

212812494 is a wasteful number, since it uses less digits than its factorization.

212812494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2086419.

The product of its digits is 9216, while the sum is 33.

The square root of 212812494 is about 14588.0942552480. The cubic root of 212812494 is about 597.0339674676.

The spelling of 212812494 in words is "two hundred twelve million, eight hundred twelve thousand, four hundred ninety-four".