18620064 has 96 divisors (see below), whose sum is σ = 56730240. Its totient is φ = 5930496.

The previous prime is 18620051. The next prime is 18620089. The reversal of 18620064 is 46002681.

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

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19404 + ... + 20340.

It is an arithmetic number, because the mean of its divisors is an integer number (590940).

Almost surely, 2^18620064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18620064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28365120).

18620064 is an abundant number, since it is smaller than the sum of its proper divisors (38110176).

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

18620064 is a wasteful number, since it uses less digits than its factorization.

18620064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 979 (or 965 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 18620064 is about 4315.0972179083. The cubic root of 18620064 is about 265.0495409930.

The spelling of 18620064 in words is "eighteen million, six hundred twenty thousand, sixty-four".