18550560 has 96 divisors (see below), whose sum is σ = 66794112. Its totient is φ = 4239360.

The previous prime is 18550559. The next prime is 18550561. The reversal of 18550560 is 6505581.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18550559) and next prime (18550561).

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18550561) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 600 + ... + 6120.

It is an arithmetic number, because the mean of its divisors is an integer number (695772).

Almost surely, 2^18550560 is an apocalyptic number.

18550560 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 18550560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33397056).

18550560 is an abundant number, since it is smaller than the sum of its proper divisors (48243552).

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

18550560 is a wasteful number, since it uses less digits than its factorization.

18550560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5546 (or 5538 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 30.

The square root of 18550560 is about 4307.0361038654. The cubic root of 18550560 is about 264.7193421188.

It can be divided in two parts, 18550 and 560, that added together give a triangular number (19110 = T₁₉₅).

The spelling of 18550560 in words is "eighteen million, five hundred fifty thousand, five hundred sixty".