20480907 has 4 divisors (see below), whose sum is σ = 27307880. Its totient is φ = 13653936.

The previous prime is 20480899. The next prime is 20480939. The reversal of 20480907 is 70908402.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 20480907 - 2³ = 20480899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20480107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3413482 + ... + 3413487.

It is an arithmetic number, because the mean of its divisors is an integer number (6826970).

Almost surely, 2^20480907 is an apocalyptic number.

20480907 is a deficient number, since it is larger than the sum of its proper divisors (6826973).

20480907 is an equidigital number, since it uses as much as digits as its factorization.

20480907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6826972.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20480907 is about 4525.5836087736. The cubic root of 20480907 is about 273.6001903362.

The spelling of 20480907 in words is "twenty million, four hundred eighty thousand, nine hundred seven".