212507912 has 16 divisors (see below), whose sum is σ = 398889900. Its totient is φ = 106137280.

The previous prime is 212507873. The next prime is 212507917. The reversal of 212507912 is 219705212.

It can be written as a sum of positive squares in 2 ways, for example, as 198415396 + 14092516 = 14086^2 + 3754^2 .

It is a super-2 number, since 2×212507912² = 90319225325199488, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (212507917) 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, 6587 + ... + 21642.

Almost surely, 2^212507912 is an apocalyptic number.

It is an amenable number.

212507912 is a deficient number, since it is larger than the sum of its proper divisors (186381988).

212507912 is a wasteful number, since it uses less digits than its factorization.

212507912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29176 (or 29172 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 212507912 is about 14577.6511139484. The cubic root of 212507912 is about 596.7490020200.

The spelling of 212507912 in words is "two hundred twelve million, five hundred seven thousand, nine hundred twelve".