18828650 has 12 divisors (see below), whose sum is σ = 35021382. Its totient is φ = 7531440.

The previous prime is 18828647. The next prime is 18828679. The reversal of 18828650 is 5682881.

It can be written as a sum of positive squares in 3 ways, for example, as 16297369 + 2531281 = 4037^2 + 1591^2 .

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 an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 188237 + ... + 188336.

Almost surely, 2^18828650 is an apocalyptic number.

18828650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18828650 is a deficient number, since it is larger than the sum of its proper divisors (16192732).

18828650 is a wasteful number, since it uses less digits than its factorization.

18828650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 376585 (or 376580 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 38.

The square root of 18828650 is about 4339.1992348819. The cubic root of 18828650 is about 266.0355823280.

The spelling of 18828650 in words is "eighteen million, eight hundred twenty-eight thousand, six hundred fifty".