212289904 has 10 divisors (see below), whose sum is σ = 411311720. Its totient is φ = 106144944.

The previous prime is 212289893. The next prime is 212289949. The reversal of 212289904 is 409982212.

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 6634044 + ... + 6634075.

It is an arithmetic number, because the mean of its divisors is an integer number (41131172).

Almost surely, 2^212289904 is an apocalyptic number.

It is an amenable number.

212289904 is a deficient number, since it is larger than the sum of its proper divisors (199021816).

212289904 is a wasteful number, since it uses less digits than its factorization.

212289904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13268127 (or 13268121 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 37.

The square root of 212289904 is about 14570.1717217060. The cubic root of 212289904 is about 596.5448675507.

The spelling of 212289904 in words is "two hundred twelve million, two hundred eighty-nine thousand, nine hundred four".