212988164 has 6 divisors (see below), whose sum is σ = 372729294. Its totient is φ = 106494080.

The previous prime is 212988137. The next prime is 212988221. The reversal of 212988164 is 461889212.

It can be written as a sum of positive squares in only one way, i.e., 108784900 + 104203264 = 10430^2 + 10208^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 26623517 + ... + 26623524.

It is an arithmetic number, because the mean of its divisors is an integer number (62121549).

Almost surely, 2^212988164 is an apocalyptic number.

It is an amenable number.

212988164 is a deficient number, since it is larger than the sum of its proper divisors (159741130).

212988164 is a wasteful number, since it uses less digits than its factorization.

212988164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53247045 (or 53247043 counting only the distinct ones).

The product of its digits is 55296, while the sum is 41.

The square root of 212988164 is about 14594.1140190147. The cubic root of 212988164 is about 597.1981998547.

The spelling of 212988164 in words is "two hundred twelve million, nine hundred eighty-eight thousand, one hundred sixty-four".