212885804 has 24 divisors (see below), whose sum is σ = 404812800. Its totient is φ = 97586640.

The previous prime is 212885801. The next prime is 212885831. The reversal of 212885804 is 408588212.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (212885801) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 42824 + ... + 47535.

It is an arithmetic number, because the mean of its divisors is an integer number (16867200).

Almost surely, 2^212885804 is an apocalyptic number.

It is an amenable number.

212885804 is a deficient number, since it is larger than the sum of its proper divisors (191926996).

212885804 is a wasteful number, since it uses less digits than its factorization.

212885804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90413 (or 90411 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 38.

The square root of 212885804 is about 14590.6067043149. The cubic root of 212885804 is about 597.1025153467.

The spelling of 212885804 in words is "two hundred twelve million, eight hundred eighty-five thousand, eight hundred four".