18766040 has 32 divisors (see below), whose sum is σ = 42921360. Its totient is φ = 7382400.

The previous prime is 18766039. The next prime is 18766049. The reversal of 18766040 is 4066781.

It is a junction number, because it is equal to n+sod(n) for n = 18765988 and 18766006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18766049) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1406 + ... + 6285.

Almost surely, 2^18766040 is an apocalyptic number.

18766040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18766040 is an abundant number, since it is smaller than the sum of its proper divisors (24155320).

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

18766040 is a wasteful number, since it uses less digits than its factorization.

18766040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7763 (or 7759 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 18766040 is about 4331.9787626442. The cubic root of 18766040 is about 265.7403764524.

The spelling of 18766040 in words is "eighteen million, seven hundred sixty-six thousand, forty".