18730450 has 24 divisors (see below), whose sum is σ = 35193060. Its totient is φ = 7416000.

The previous prime is 18730429. The next prime is 18730469. The reversal of 18730450 is 5403781.

It can be written as a sum of positive squares in 6 ways, for example, as 9903609 + 8826841 = 3147^2 + 2971^2 .

It is a hoax number, since the sum of its digits (28) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3196 + ... + 6904.

Almost surely, 2^18730450 is an apocalyptic number.

18730450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18730450 is a deficient number, since it is larger than the sum of its proper divisors (16462610).

18730450 is a wasteful number, since it uses less digits than its factorization.

18730450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3822 (or 3817 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 28.

The square root of 18730450 is about 4327.8689906234. The cubic root of 18730450 is about 265.5722769638.

The spelling of 18730450 in words is "eighteen million, seven hundred thirty thousand, four hundred fifty".