212262920 has 32 divisors (see below), whose sum is σ = 485426520. Its totient is φ = 83512320.

The previous prime is 212262899. The next prime is 212262923. The reversal of 212262920 is 29262212.

It can be written as a sum of positive squares in 4 ways, for example, as 143472484 + 68790436 = 11978^2 + 8294^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 212262920.

It is not an unprimeable number, because it can be changed into a prime (212262923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41057 + ... + 45936.

Almost surely, 2^212262920 is an apocalyptic number.

212262920 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212262920 is an abundant number, since it is smaller than the sum of its proper divisors (273163600).

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

212262920 is a wasteful number, since it uses less digits than its factorization.

212262920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87065 (or 87061 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 212262920 is about 14569.2456908379. The cubic root of 212262920 is about 596.5195910326.

The spelling of 212262920 in words is "two hundred twelve million, two hundred sixty-two thousand, nine hundred twenty".