212948564 has 12 divisors (see below), whose sum is σ = 374207988. Its totient is φ = 106032000.

The previous prime is 212948539. The next prime is 212948569. The reversal of 212948564 is 465849212.

It can be written as a sum of positive squares in 2 ways, for example, as 198584464 + 14364100 = 14092^2 + 3790^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212948569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 109487 + ... + 111414.

It is an arithmetic number, because the mean of its divisors is an integer number (31183999).

Almost surely, 2^212948564 is an apocalyptic number.

It is an amenable number.

212948564 is a deficient number, since it is larger than the sum of its proper divisors (161259424).

212948564 is a wasteful number, since it uses less digits than its factorization.

212948564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221146 (or 221144 counting only the distinct ones).

The product of its digits is 138240, while the sum is 41.

The square root of 212948564 is about 14592.7572446060. The cubic root of 212948564 is about 597.1611860381.

The spelling of 212948564 in words is "two hundred twelve million, nine hundred forty-eight thousand, five hundred sixty-four".