18282100 has 18 divisors (see below), whose sum is σ = 39672374. Its totient is φ = 7312800.

The previous prime is 18282073. The next prime is 18282109. The reversal of 18282100 is 128281.

It can be written as a sum of positive squares in 3 ways, for example, as 675684 + 17606416 = 822^2 + 4196^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18282109) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 91311 + ... + 91510.

Almost surely, 2^18282100 is an apocalyptic number.

18282100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18282100 is an abundant number, since it is smaller than the sum of its proper divisors (21390274).

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

18282100 is a wasteful number, since it uses less digits than its factorization.

18282100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182835 (or 182828 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 18282100 is about 4275.7572428752. The cubic root of 18282100 is about 263.4361435158.

The spelling of 18282100 in words is "eighteen million, two hundred eighty-two thousand, one hundred".