18483400 has 48 divisors (see below), whose sum is σ = 46286100. Its totient is φ = 6823680.

The previous prime is 18483391. The next prime is 18483407. The reversal of 18483400 is 438481.

It can be written as a sum of positive squares in 6 ways, for example, as 1127844 + 17355556 = 1062^2 + 4166^2 .

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 not an unprimeable number, because it can be changed into a prime (18483407) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 955 + ... + 6154.

Almost surely, 2^18483400 is an apocalyptic number.

18483400 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18483400 is an abundant number, since it is smaller than the sum of its proper divisors (27802700).

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

18483400 is a wasteful number, since it uses less digits than its factorization.

18483400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7138 (or 7129 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The square root of 18483400 is about 4299.2324896428. The cubic root of 18483400 is about 264.3994946445.

The spelling of 18483400 in words is "eighteen million, four hundred eighty-three thousand, four hundred".