212389652 has 12 divisors (see below), whose sum is σ = 373963296. Its totient is φ = 105543000.

The previous prime is 212389651. The next prime is 212389679. The reversal of 212389652 is 256983212.

It is a super-2 number, since 2×212389652² = 90218728553362208, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (212389651) 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, 162224 + ... + 163527.

It is an arithmetic number, because the mean of its divisors is an integer number (31163608).

Almost surely, 2^212389652 is an apocalyptic number.

It is an amenable number.

212389652 is a deficient number, since it is larger than the sum of its proper divisors (161573644).

212389652 is a wasteful number, since it uses less digits than its factorization.

212389652 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 325918 (or 325916 counting only the distinct ones).

The product of its digits is 51840, while the sum is 38.

The square root of 212389652 is about 14573.5943404501. The cubic root of 212389652 is about 596.6382851510.

The spelling of 212389652 in words is "two hundred twelve million, three hundred eighty-nine thousand, six hundred fifty-two".