20164608 has 78 divisors (see below), whose sum is σ = 58352684. Its totient is φ = 6709248.

The previous prime is 20164597. The next prime is 20164621. The reversal of 20164608 is 80646102.

It is a super-2 number, since 2×20164608² = 813222831587328, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 36591 + ... + 37137.

Almost surely, 2^20164608 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 20164608, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29176342).

20164608 is an abundant number, since it is smaller than the sum of its proper divisors (38188076).

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

20164608 is an equidigital number, since it uses as much as digits as its factorization.

20164608 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 577 (or 552 counting only the distinct ones).

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

The square root of 20164608 is about 4490.5019763942. The cubic root of 20164608 is about 272.1844193392.

The spelling of 20164608 in words is "twenty million, one hundred sixty-four thousand, six hundred eight".