212968788 has 12 divisors (see below), whose sum is σ = 496927200. Its totient is φ = 70989592.

The previous prime is 212968759. The next prime is 212968823. The reversal of 212968788 is 887869212.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 212968788.

It is a congruent number.

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 3 ways as a sum of consecutive naturals, for example, 8873688 + ... + 8873711.

It is an arithmetic number, because the mean of its divisors is an integer number (41410600).

Almost surely, 2^212968788 is an apocalyptic number.

It is an amenable number.

212968788 is an abundant number, since it is smaller than the sum of its proper divisors (283958412).

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

212968788 is a wasteful number, since it uses less digits than its factorization.

212968788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17747406 (or 17747404 counting only the distinct ones).

The product of its digits is 774144, while the sum is 51.

The square root of 212968788 is about 14593.4501746503. The cubic root of 212968788 is about 597.1800898292.

It can be divided in two parts, 21296 and 8788, that multiplied together give a cube (187149248 = 572³).

The spelling of 212968788 in words is "two hundred twelve million, nine hundred sixty-eight thousand, seven hundred eighty-eight".