212973456 has 20 divisors (see below), whose sum is σ = 550181552. Its totient is φ = 70991136.

The previous prime is 212973407. The next prime is 212973457. The reversal of 212973456 is 654379212.

212973456 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (212973457) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2218426 + ... + 2218521.

Almost surely, 2^212973456 is an apocalyptic number.

It is an amenable number.

212973456 is an abundant number, since it is smaller than the sum of its proper divisors (337208096).

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

212973456 is a wasteful number, since it uses less digits than its factorization.

212973456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4436958 (or 4436952 counting only the distinct ones).

The product of its digits is 90720, while the sum is 39.

The square root of 212973456 is about 14593.6101085372. The cubic root of 212973456 is about 597.1844529354.

It can be divided in two parts, 21297 and 3456, that added together give a triangular number (24753 = T₂₂₂).

The spelling of 212973456 in words is "two hundred twelve million, nine hundred seventy-three thousand, four hundred fifty-six".