18268560 has 60 divisors (see below), whose sum is σ = 61354332. Its totient is φ = 4871424.

The previous prime is 18268553. The next prime is 18268567. The reversal of 18268560 is 6586281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18268553) and next prime (18268567).

It can be written as a sum of positive squares in 2 ways, for example, as 2396304 + 15872256 = 1548^2 + 3984^2 .

It is a tau number, because it is divible by the number of its divisors (60).

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

It is not an unprimeable number, because it can be changed into a prime (18268567) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11967 + ... + 13406.

Almost surely, 2^18268560 is an apocalyptic number.

18268560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18268560 is an abundant number, since it is smaller than the sum of its proper divisors (43085772).

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

18268560 is a wasteful number, since it uses less digits than its factorization.

18268560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25392 (or 25383 counting only the distinct ones).

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

The square root of 18268560 is about 4274.1736043357. The cubic root of 18268560 is about 263.3710925221.

The spelling of 18268560 in words is "eighteen million, two hundred sixty-eight thousand, five hundred sixty".