18059700 has 72 divisors (see below), whose sum is σ = 53697952. Its totient is φ = 4682880.

The previous prime is 18059693. The next prime is 18059707. The reversal of 18059700 is 795081.

It is an interprime number because it is at equal distance from previous prime (18059693) and next prime (18059707).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18059707) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 10287 + ... + 11913.

Almost surely, 2^18059700 is an apocalyptic number.

18059700 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18059700, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26848976).

18059700 is an abundant number, since it is smaller than the sum of its proper divisors (35638252).

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

18059700 is a wasteful number, since it uses less digits than its factorization.

18059700 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1681 (or 1674 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 30.

The square root of 18059700 is about 4249.6705754682. The cubic root of 18059700 is about 262.3635572097.

The spelling of 18059700 in words is "eighteen million, fifty-nine thousand, seven hundred".