18923896 has 16 divisors (see below), whose sum is σ = 36084600. Its totient is φ = 9301344.

The previous prime is 18923893. The next prime is 18923903. The reversal of 18923896 is 69832981.

It is a super-2 number, since 2×18923896² = 716227679637632, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18923893) 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, 19575 + ... + 20518.

Almost surely, 2^18923896 is an apocalyptic number.

It is an amenable number.

18923896 is a deficient number, since it is larger than the sum of its proper divisors (17160704).

18923896 is a wasteful number, since it uses less digits than its factorization.

18923896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40158 (or 40154 counting only the distinct ones).

The product of its digits is 186624, while the sum is 46.

The square root of 18923896 is about 4350.1604568108. The cubic root of 18923896 is about 266.4834143764.

The spelling of 18923896 in words is "eighteen million, nine hundred twenty-three thousand, eight hundred ninety-six".