20455608 has 32 divisors (see below), whose sum is σ = 51408000. Its totient is φ = 6782688.

The previous prime is 20455601. The next prime is 20455627. The reversal of 20455608 is 80655402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20455601) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2635 + ... + 6917.

It is an arithmetic number, because the mean of its divisors is an integer number (1606500).

Almost surely, 2^20455608 is an apocalyptic number.

It is an amenable number.

20455608 is an abundant number, since it is smaller than the sum of its proper divisors (30952392).

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

20455608 is a wasteful number, since it uses less digits than its factorization.

20455608 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4491 (or 4487 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 30.

The square root of 20455608 is about 4522.7876359608. The cubic root of 20455608 is about 273.4874892203.

The spelling of 20455608 in words is "twenty million, four hundred fifty-five thousand, six hundred eight".