18797212 has 24 divisors (see below), whose sum is σ = 37812320. Its totient is φ = 8009280.

The previous prime is 18797209. The next prime is 18797239. The reversal of 18797212 is 21279781.

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 in 7 ways as a sum of consecutive naturals, for example, 3214 + ... + 6922.

Almost surely, 2^18797212 is an apocalyptic number.

It is an amenable number.

18797212 is an abundant number, since it is smaller than the sum of its proper divisors (19015108).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18797212 is a wasteful number, since it uses less digits than its factorization.

18797212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3901 (or 3899 counting only the distinct ones).

The product of its digits is 14112, while the sum is 37.

The square root of 18797212 is about 4335.5751636894. The cubic root of 18797212 is about 265.8874342337.

The spelling of 18797212 in words is "eighteen million, seven hundred ninety-seven thousand, two hundred twelve".