18745020 has 288 divisors, whose sum is σ = 73382400. Its totient is φ = 3919104.

The previous prime is 18745007. The next prime is 18745031. The reversal of 18745020 is 2054781.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 646366 + ... + 646394.

It is an arithmetic number, because the mean of its divisors is an integer number (254800).

Almost surely, 2^18745020 is an apocalyptic number.

18745020 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 18745020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36691200).

18745020 is an abundant number, since it is smaller than the sum of its proper divisors (54637380).

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

18745020 is a wasteful number, since it uses less digits than its factorization.

18745020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 79 (or 65 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 27.

The square root of 18745020 is about 4329.5519398663. The cubic root of 18745020 is about 265.6411200367.

The spelling of 18745020 in words is "eighteen million, seven hundred forty-five thousand, twenty".