212997504 has 64 divisors (see below), whose sum is σ = 569539440. Its totient is φ = 70526976.

The previous prime is 212997469. The next prime is 212997527. The reversal of 212997504 is 405799212.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58522 + ... + 62054.

Almost surely, 2^212997504 is an apocalyptic number.

212997504 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 212997504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284769720).

212997504 is an abundant number, since it is smaller than the sum of its proper divisors (356541936).

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

212997504 is a wasteful number, since it uses less digits than its factorization.

212997504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3707 (or 3695 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 39.

The square root of 212997504 is about 14594.4340075249. The cubic root of 212997504 is about 597.2069292125.

The spelling of 212997504 in words is "two hundred twelve million, nine hundred ninety-seven thousand, five hundred four".