20117498 has 8 divisors (see below), whose sum is σ = 30458592. Its totient is φ = 9964636.

The previous prime is 20117497. The next prime is 20117519. The reversal of 20117498 is 89471102.

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

It is not an unprimeable number, because it can be changed into a prime (20117497) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46790 + ... + 47217.

It is an arithmetic number, because the mean of its divisors is an integer number (3807324).

Almost surely, 2^20117498 is an apocalyptic number.

20117498 is a deficient number, since it is larger than the sum of its proper divisors (10341094).

20117498 is a wasteful number, since it uses less digits than its factorization.

20117498 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 94116.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 20117498 is about 4485.2533930649. The cubic root of 20117498 is about 271.9722884831.

The spelling of 20117498 in words is "twenty million, one hundred seventeen thousand, four hundred ninety-eight".