18406450 has 12 divisors (see below), whose sum is σ = 34236090. Its totient is φ = 7362560.

The previous prime is 18406379. The next prime is 18406471. The reversal of 18406450 is 5460481.

It can be written as a sum of positive squares in 3 ways, for example, as 8590761 + 9815689 = 2931^2 + 3133^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 184015 + ... + 184114.

Almost surely, 2^18406450 is an apocalyptic number.

18406450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18406450 is a deficient number, since it is larger than the sum of its proper divisors (15829640).

18406450 is a wasteful number, since it uses less digits than its factorization.

18406450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 368141 (or 368136 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 18406450 is about 4290.2738840312. The cubic root of 18406450 is about 264.0320687245.

The spelling of 18406450 in words is "eighteen million, four hundred six thousand, four hundred fifty".