20117548 has 48 divisors (see below), whose sum is σ = 40674816. Its totient is φ = 8616960.

The previous prime is 20117527. The next prime is 20117549. The reversal of 20117548 is 84571102.

It is a Smith number, since the sum of its digits (28) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (20117549) 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, 104140 + ... + 104332.

It is an arithmetic number, because the mean of its divisors is an integer number (847392).

Almost surely, 2^20117548 is an apocalyptic number.

It is an amenable number.

20117548 is an abundant number, since it is smaller than the sum of its proper divisors (20557268).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20117548 is a wasteful number, since it uses less digits than its factorization.

20117548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 334 (or 332 counting only the distinct ones).

The product of its (nonzero) digits is 2240, while the sum is 28.

The square root of 20117548 is about 4485.2589668825. The cubic root of 20117548 is about 271.9725138027.

It can be divided in two parts, 2011 and 7548, that added together give a palindrome (9559).

The spelling of 20117548 in words is "twenty million, one hundred seventeen thousand, five hundred forty-eight".