18540560 has 40 divisors (see below), whose sum is σ = 44032896. Its totient is φ = 7256960.

The previous prime is 18540539. The next prime is 18540581. The reversal of 18540560 is 6504581.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18540539) and next prime (18540581).

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-2 number, since 2×18540560² = 687504730227200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1295 + ... + 6225.

Almost surely, 2^18540560 is an apocalyptic number.

18540560 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 18540560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22016448).

18540560 is an abundant number, since it is smaller than the sum of its proper divisors (25492336).

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

18540560 is a wasteful number, since it uses less digits than its factorization.

18540560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4991 (or 4985 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 29.

The square root of 18540560 is about 4305.8750562458. The cubic root of 18540560 is about 264.6717663900.

The spelling of 18540560 in words is "eighteen million, five hundred forty thousand, five hundred sixty".