212805452 has 48 divisors (see below), whose sum is σ = 398103552. Its totient is φ = 99368640.

The previous prime is 212805433. The next prime is 212805469. The reversal of 212805452 is 254508212.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 570338 + ... + 570710.

It is an arithmetic number, because the mean of its divisors is an integer number (8293824).

Almost surely, 2^212805452 is an apocalyptic number.

It is an amenable number.

212805452 is a deficient number, since it is larger than the sum of its proper divisors (185298100).

212805452 is a wasteful number, since it uses less digits than its factorization.

212805452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558 (or 556 counting only the distinct ones).

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 212805452 is about 14587.8528920469. The cubic root of 212805452 is about 597.0273820780.

The spelling of 212805452 in words is "two hundred twelve million, eight hundred five thousand, four hundred fifty-two".