212744870 has 32 divisors (see below), whose sum is σ = 426625920. Its totient is φ = 75841920.

The previous prime is 212744869. The next prime is 212744911. The reversal of 212744870 is 78447212.

It is a happy number.

It is a super-2 number, since 2×212744870² = 90520759422633800, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 212744870.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24446 + ... + 31985.

It is an arithmetic number, because the mean of its divisors is an integer number (13332060).

Almost surely, 2^212744870 is an apocalyptic number.

212744870 is an abundant number, since it is smaller than the sum of its proper divisors (213881050).

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

212744870 is a wasteful number, since it uses less digits than its factorization.

212744870 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56480.

The product of its (nonzero) digits is 25088, while the sum is 35.

The square root of 212744870 is about 14585.7762906196. The cubic root of 212744870 is about 596.9707222739.

The spelling of 212744870 in words is "two hundred twelve million, seven hundred forty-four thousand, eight hundred seventy".