18620560 has 80 divisors (see below), whose sum is σ = 50746752. Its totient is φ = 6220800.

The previous prime is 18620549. The next prime is 18620587. The reversal of 18620560 is 6502681.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22555 + ... + 23365.

Almost surely, 2^18620560 is an apocalyptic number.

18620560 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 18620560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25373376).

18620560 is an abundant number, since it is smaller than the sum of its proper divisors (32126192).

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

18620560 is a wasteful number, since it uses less digits than its factorization.

18620560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 872 (or 866 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 18620560 is about 4315.1546901589. The cubic root of 18620560 is about 265.0518944293.

The spelling of 18620560 in words is "eighteen million, six hundred twenty thousand, five hundred sixty".