20480109 has 16 divisors (see below), whose sum is σ = 30035712. Its totient is φ = 12333888.

The previous prime is 20480107. The next prime is 20480111. The reversal of 20480109 is 90108402.

It is an interprime number because it is at equal distance from previous prime (20480107) and next prime (20480111).

It is not a de Polignac number, because 20480109 - 2¹ = 20480107 is a prime.

It is a congruent number.

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

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3754 + ... + 7419.

It is an arithmetic number, because the mean of its divisors is an integer number (1877232).

Almost surely, 2^20480109 is an apocalyptic number.

It is an amenable number.

20480109 is a deficient number, since it is larger than the sum of its proper divisors (9555603).

20480109 is a wasteful number, since it uses less digits than its factorization.

20480109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11236.

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 20480109 is about 4525.4954424902. The cubic root of 20480109 is about 273.5966368512.

The spelling of 20480109 in words is "twenty million, four hundred eighty thousand, one hundred nine".