20480956 has 24 divisors (see below), whose sum is σ = 37184000. Its totient is φ = 9860400.

The previous prime is 20480939. The next prime is 20480959. The reversal of 20480956 is 65908402.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20480959) 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, 40795 + ... + 41293.

Almost surely, 2^20480956 is an apocalyptic number.

It is an amenable number.

20480956 is a deficient number, since it is larger than the sum of its proper divisors (16703044).

20480956 is a wasteful number, since it uses less digits than its factorization.

20480956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 865 (or 863 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 20480956 is about 4525.5890224367. The cubic root of 20480956 is about 273.6004085297.

The spelling of 20480956 in words is "twenty million, four hundred eighty thousand, nine hundred fifty-six".