18925240 has 64 divisors (see below), whose sum is σ = 44323200. Its totient is φ = 7268352.

The previous prime is 18925237. The next prime is 18925243. The reversal of 18925240 is 4252981.

It is an interprime number because it is at equal distance from previous prime (18925237) and next prime (18925243).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18925243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167424 + ... + 167536.

It is an arithmetic number, because the mean of its divisors is an integer number (692550).

Almost surely, 2^18925240 is an apocalyptic number.

18925240 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 18925240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22161600).

18925240 is an abundant number, since it is smaller than the sum of its proper divisors (25397960).

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

18925240 is a wasteful number, since it uses less digits than its factorization.

18925240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256 (or 252 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 31.

The square root of 18925240 is about 4350.3149311285. The cubic root of 18925240 is about 266.4897228946.

The spelling of 18925240 in words is "eighteen million, nine hundred twenty-five thousand, two hundred forty".