212320944 has 120 divisors (see below), whose sum is σ = 651815424. Its totient is φ = 63984000.

The previous prime is 212320921. The next prime is 212320951. The reversal of 212320944 is 449023212.

It is a super-2 number, since 2×212320944² = 90160366522102272, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 492409 + ... + 492839.

Almost surely, 2^212320944 is an apocalyptic number.

212320944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 212320944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (325907712).

212320944 is an abundant number, since it is smaller than the sum of its proper divisors (439494480).

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

212320944 is a wasteful number, since it uses less digits than its factorization.

212320944 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 767 (or 758 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 27.

The square root of 212320944 is about 14571.2368726886. The cubic root of 212320944 is about 596.5739407660.

The spelling of 212320944 in words is "two hundred twelve million, three hundred twenty thousand, nine hundred forty-four".