18859120 has 120 divisors (see below), whose sum is σ = 54197424. Its totient is φ = 6064128.

The previous prime is 18859111. The next prime is 18859121. The reversal of 18859120 is 2195881.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18859121) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 66499 + ... + 66781.

Almost surely, 2^18859120 is an apocalyptic number.

18859120 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 18859120, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27098712).

18859120 is an abundant number, since it is smaller than the sum of its proper divisors (35338304).

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

18859120 is a wasteful number, since it uses less digits than its factorization.

18859120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327 (or 314 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 34.

The square root of 18859120 is about 4342.7088320540. The cubic root of 18859120 is about 266.1790115432.

The spelling of 18859120 in words is "eighteen million, eight hundred fifty-nine thousand, one hundred twenty".