18255040 has 28 divisors (see below), whose sum is σ = 43470576. Its totient is φ = 7301888.

The previous prime is 18255019. The next prime is 18255047. The reversal of 18255040 is 4055281.

It is a junction number, because it is equal to n+sod(n) for n = 18254996 and 18255014.

It is not an unprimeable number, because it can be changed into a prime (18255047) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28204 + ... + 28843.

Almost surely, 2^18255040 is an apocalyptic number.

18255040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18255040 is an abundant number, since it is smaller than the sum of its proper divisors (25215536).

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

18255040 is an equidigital number, since it uses as much as digits as its factorization.

18255040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57064 (or 57054 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 18255040 is about 4272.5917193198. The cubic root of 18255040 is about 263.3061055364.

The spelling of 18255040 in words is "eighteen million, two hundred fifty-five thousand, forty".