18857036 has 12 divisors (see below), whose sum is σ = 35999880. Its totient is φ = 8571360.

The previous prime is 18857023. The next prime is 18857039. The reversal of 18857036 is 63075881.

It is a hoax number, since the sum of its digits (38) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (18857039) 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, 214241 + ... + 214328.

It is an arithmetic number, because the mean of its divisors is an integer number (2999990).

Almost surely, 2^18857036 is an apocalyptic number.

It is an amenable number.

18857036 is a deficient number, since it is larger than the sum of its proper divisors (17142844).

18857036 is a wasteful number, since it uses less digits than its factorization.

18857036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428584 (or 428582 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 38.

The square root of 18857036 is about 4342.4688830203. The cubic root of 18857036 is about 266.1692066054.

The spelling of 18857036 in words is "eighteen million, eight hundred fifty-seven thousand, thirty-six".