20480929 has 4 divisors (see below), whose sum is σ = 23406784. Its totient is φ = 17555076.

The previous prime is 20480899. The next prime is 20480939. The reversal of 20480929 is 92908402.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 20480929 - 2¹¹ = 20478881 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20480894 and 20480903.

It is not an unprimeable number, because it can be changed into a prime (20480939) 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, 1462917 + ... + 1462930.

It is an arithmetic number, because the mean of its divisors is an integer number (5851696).

Almost surely, 2^20480929 is an apocalyptic number.

It is an amenable number.

20480929 is a deficient number, since it is larger than the sum of its proper divisors (2925855).

20480929 is an equidigital number, since it uses as much as digits as its factorization.

20480929 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2925854.

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 20480929 is about 4525.5860393987. The cubic root of 20480929 is about 273.6002883007.

The spelling of 20480929 in words is "twenty million, four hundred eighty thousand, nine hundred twenty-nine".