18900212 has 24 divisors (see below), whose sum is σ = 34957440. Its totient is φ = 8916480.

The previous prime is 18900187. The next prime is 18900223. The reversal of 18900212 is 21200981.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32468 + ... + 33044.

It is an arithmetic number, because the mean of its divisors is an integer number (1456560).

Almost surely, 2^18900212 is an apocalyptic number.

It is an amenable number.

18900212 is a deficient number, since it is larger than the sum of its proper divisors (16057228).

18900212 is a wasteful number, since it uses less digits than its factorization.

18900212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1031 (or 1029 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 23.

The square root of 18900212 is about 4347.4374061049. The cubic root of 18900212 is about 266.3721964749.

The spelling of 18900212 in words is "eighteen million, nine hundred thousand, two hundred twelve".