18750330 has 24 divisors (see below), whose sum is σ = 48751092. Its totient is φ = 5000064.

The previous prime is 18750317. The next prime is 18750341. The reversal of 18750330 is 3305781.

It can be written as a sum of positive squares in 2 ways, for example, as 18688329 + 62001 = 4323^2 + 249^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18750294 and 18750303.

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, 104079 + ... + 104258.

Almost surely, 2^18750330 is an apocalyptic number.

18750330 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18750330 is an abundant number, since it is smaller than the sum of its proper divisors (30000762).

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

18750330 is a wasteful number, since it uses less digits than its factorization.

18750330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208350 (or 208347 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 27.

The square root of 18750330 is about 4330.1651238723. The cubic root of 18750330 is about 265.6662008524. Note that the first 3 decimals are identical.

The spelling of 18750330 in words is "eighteen million, seven hundred fifty thousand, three hundred thirty".