18196672 has 28 divisors (see below), whose sum is σ = 38888416. Its totient is φ = 8398080.

The previous prime is 18196667. The next prime is 18196679. The reversal of 18196672 is 27669181.

It is a super-2 number, since 2×18196672² = 662237743751168, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18196679) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10104 + ... + 11767.

It is an arithmetic number, because the mean of its divisors is an integer number (1388872).

Almost surely, 2^18196672 is an apocalyptic number.

It is an amenable number.

18196672 is an abundant number, since it is smaller than the sum of its proper divisors (20691744).

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

18196672 is a wasteful number, since it uses less digits than its factorization.

18196672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21896 (or 21886 counting only the distinct ones).

The product of its digits is 36288, while the sum is 40.

The square root of 18196672 is about 4265.7557360918. The cubic root of 18196672 is about 263.0251774631.

The spelling of 18196672 in words is "eighteen million, one hundred ninety-six thousand, six hundred seventy-two".