20484117 has 8 divisors (see below), whose sum is σ = 30346880. Its totient is φ = 13656060.

The previous prime is 20484097. The next prime is 20484143. The reversal of 20484117 is 71148402.

It is not a de Polignac number, because 20484117 - 2¹¹ = 20482069 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 758671 = 20484117 / (2 + 0 + 4 + 8 + 4 + 1 + 1 + 7).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20484197) 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, 379309 + ... + 379362.

It is an arithmetic number, because the mean of its divisors is an integer number (3793360).

Almost surely, 2^20484117 is an apocalyptic number.

20484117 is a gapful number since it is divisible by the number (27) formed by its first and last digit.

It is an amenable number.

20484117 is a deficient number, since it is larger than the sum of its proper divisors (9862763).

20484117 is an equidigital number, since it uses as much as digits as its factorization.

20484117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 758680 (or 758674 counting only the distinct ones).

The product of its (nonzero) digits is 1792, while the sum is 27.

The square root of 20484117 is about 4525.9382452703. The cubic root of 20484117 is about 273.6144834977.

The spelling of 20484117 in words is "twenty million, four hundred eighty-four thousand, one hundred seventeen".