213912380 has 24 divisors (see below), whose sum is σ = 490054320. Its totient is φ = 77786240.

The previous prime is 213912379. The next prime is 213912403. The reversal of 213912380 is 83219312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485945 + ... + 486384.

It is an arithmetic number, because the mean of its divisors is an integer number (20418930).

Almost surely, 2^213912380 is an apocalyptic number.

213912380 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213912380 is an abundant number, since it is smaller than the sum of its proper divisors (276141940).

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

213912380 is a wasteful number, since it uses less digits than its factorization.

213912380 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 972349 (or 972347 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 213912380 is about 14625.7437417726. The cubic root of 213912380 is about 598.0607575020.

The spelling of 213912380 in words is "two hundred thirteen million, nine hundred twelve thousand, three hundred eighty".