212252720 has 40 divisors (see below), whose sum is σ = 506832144. Its totient is φ = 82605312.

The previous prime is 212252699. The next prime is 212252731. The reversal of 212252720 is 27252212.

It is a tau number, because it is divible by the number of its divisors (40).

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, 32894 + ... + 38813.

Almost surely, 2^212252720 is an apocalyptic number.

212252720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

212252720 is an abundant number, since it is smaller than the sum of its proper divisors (294579424).

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

212252720 is a wasteful number, since it uses less digits than its factorization.

212252720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71757 (or 71751 counting only the distinct ones).

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 212252720 is about 14568.8956341927. The cubic root of 212252720 is about 596.5100359059.

The spelling of 212252720 in words is "two hundred twelve million, two hundred fifty-two thousand, seven hundred twenty".