18260568 has 48 divisors (see below), whose sum is σ = 49870080. Its totient is φ = 6035904.

The previous prime is 18260549. The next prime is 18260587. The reversal of 18260568 is 86506281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18260549) and next prime (18260587).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8146 + ... + 10142.

It is an arithmetic number, because the mean of its divisors is an integer number (1038960).

Almost surely, 2^18260568 is an apocalyptic number.

18260568 is a gapful number since it is divisible by the number (18) 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 18260568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24935040).

18260568 is an abundant number, since it is smaller than the sum of its proper divisors (31609512).

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

18260568 is a wasteful number, since it uses less digits than its factorization.

18260568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136 (or 2129 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

The square root of 18260568 is about 4273.2385844930. The cubic root of 18260568 is about 263.3326810146.

The spelling of 18260568 in words is "eighteen million, two hundred sixty thousand, five hundred sixty-eight".