18628450 has 24 divisors (see below), whose sum is σ = 35390592. Its totient is φ = 7291920.

The previous prime is 18628439. The next prime is 18628451. The reversal of 18628450 is 5482681.

It is not an unprimeable number, because it can be changed into a prime (18628451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1614 + ... + 6313.

It is an arithmetic number, because the mean of its divisors is an integer number (1474608).

Almost surely, 2^18628450 is an apocalyptic number.

18628450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18628450 is a deficient number, since it is larger than the sum of its proper divisors (16762142).

18628450 is a wasteful number, since it uses less digits than its factorization.

18628450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7986 (or 7981 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 18628450 is about 4316.0688131678. The cubic root of 18628450 is about 265.0893255296.

The spelling of 18628450 in words is "eighteen million, six hundred twenty-eight thousand, four hundred fifty".