212760380 has 48 divisors (see below), whose sum is σ = 511551936. Its totient is φ = 72814080.

The previous prime is 212760377. The next prime is 212760407. The reversal of 212760380 is 83067212.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 105542 + ... + 107538.

It is an arithmetic number, because the mean of its divisors is an integer number (10657332).

Almost surely, 2^212760380 is an apocalyptic number.

212760380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212760380 is an abundant number, since it is smaller than the sum of its proper divisors (298791556).

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

212760380 is a wasteful number, since it uses less digits than its factorization.

212760380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2774 (or 2772 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 212760380 is about 14586.3079632922. The cubic root of 212760380 is about 596.9852291508.

The spelling of 212760380 in words is "two hundred twelve million, seven hundred sixty thousand, three hundred eighty".