18025740 has 72 divisors (see below), whose sum is σ = 56718480. Its totient is φ = 4805568.

The previous prime is 18025727. The next prime is 18025741. The reversal of 18025740 is 4752081.

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

It is not an unprimeable number, because it can be changed into a prime (18025741) 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, 3006 + ... + 6714.

Almost surely, 2^18025740 is an apocalyptic number.

18025740 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 18025740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28359240).

18025740 is an abundant number, since it is smaller than the sum of its proper divisors (38692740).

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

18025740 is a wasteful number, since it uses less digits than its factorization.

18025740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3733 (or 3719 counting only the distinct ones).

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

The square root of 18025740 is about 4245.6730915133. The cubic root of 18025740 is about 262.1990019285.

The spelling of 18025740 in words is "eighteen million, twenty-five thousand, seven hundred forty".