212957880 has 32 divisors (see below), whose sum is σ = 638874000. Its totient is φ = 56788736.

The previous prime is 212957839. The next prime is 212957881. The reversal of 212957880 is 88759212.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212957881) 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, 887205 + ... + 887444.

Almost surely, 2^212957880 is an apocalyptic number.

212957880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212957880 is an abundant number, since it is smaller than the sum of its proper divisors (425916120).

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

212957880 is a wasteful number, since it uses less digits than its factorization.

212957880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1774663 (or 1774659 counting only the distinct ones).

The product of its (nonzero) digits is 80640, while the sum is 42.

The square root of 212957880 is about 14593.0764405591. The cubic root of 212957880 is about 597.1698940447.

The spelling of 212957880 in words is "two hundred twelve million, nine hundred fifty-seven thousand, eight hundred eighty".