20488117 has 8 divisors (see below), whose sum is σ = 22776320. Its totient is φ = 18301680.

The previous prime is 20488103. The next prime is 20488129. The reversal of 20488117 is 71188402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20488117 - 2⁷ = 20487989 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20488177) 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, 25017 + ... + 25822.

It is an arithmetic number, because the mean of its divisors is an integer number (2847040).

Almost surely, 2^20488117 is an apocalyptic number.

It is an amenable number.

20488117 is a deficient number, since it is larger than the sum of its proper divisors (2288203).

20488117 is a wasteful number, since it uses less digits than its factorization.

20488117 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50883.

The product of its (nonzero) digits is 3584, while the sum is 31.

The square root of 20488117 is about 4526.3801210239. The cubic root of 20488117 is about 273.6322922012.

The spelling of 20488117 in words is "twenty million, four hundred eighty-eight thousand, one hundred seventeen".