212354644 has 12 divisors (see below), whose sum is σ = 371824768. Its totient is φ = 106119000.

The previous prime is 212354627. The next prime is 212354657. The reversal of 212354644 is 446453212.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5802 + ... + 21409.

Almost surely, 2^212354644 is an apocalyptic number.

It is an amenable number.

212354644 is a deficient number, since it is larger than the sum of its proper divisors (159470124).

212354644 is a wasteful number, since it uses less digits than its factorization.

212354644 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29166 (or 29164 counting only the distinct ones).

The product of its digits is 23040, while the sum is 31.

The square root of 212354644 is about 14572.3932145684. The cubic root of 212354644 is about 596.6055022280.

The spelling of 212354644 in words is "two hundred twelve million, three hundred fifty-four thousand, six hundred forty-four".