20455626 has 8 divisors (see below), whose sum is σ = 40911264. Its totient is φ = 6818540.

The previous prime is 20455601. The next prime is 20455627. The reversal of 20455626 is 62655402.

It is a sphenic number, since it is the product of 3 distinct primes.

20455626 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20455593 and 20455602.

It is not an unprimeable number, because it can be changed into a prime (20455627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1704630 + ... + 1704641.

It is an arithmetic number, because the mean of its divisors is an integer number (5113908).

Almost surely, 2^20455626 is an apocalyptic number.

20455626 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20455626 is a wasteful number, since it uses less digits than its factorization.

20455626 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3409276.

The product of its (nonzero) digits is 14400, while the sum is 30.

The square root of 20455626 is about 4522.7896258836. The cubic root of 20455626 is about 273.4875694391.

The spelling of 20455626 in words is "twenty million, four hundred fifty-five thousand, six hundred twenty-six".