20608456 has 16 divisors (see below), whose sum is σ = 42153840. Its totient is φ = 9367440.

The previous prime is 20608453. The next prime is 20608477. The reversal of 20608456 is 65480602.

It is not an unprimeable number, because it can be changed into a prime (20608453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 117006 + ... + 117181.

It is an arithmetic number, because the mean of its divisors is an integer number (2634615).

Almost surely, 2^20608456 is an apocalyptic number.

It is an amenable number.

20608456 is an abundant number, since it is smaller than the sum of its proper divisors (21545384).

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

20608456 is a wasteful number, since it uses less digits than its factorization.

20608456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234204 (or 234200 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 31.

The square root of 20608456 is about 4539.6537312883. The cubic root of 20608456 is about 274.1669822378.

The spelling of 20608456 in words is "twenty million, six hundred eight thousand, four hundred fifty-six".