20115248 has 40 divisors (see below), whose sum is σ = 41568768. Its totient is φ = 9407552.

The previous prime is 20115247. The next prime is 20115253. The reversal of 20115248 is 84251102.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is not an unprimeable number, because it can be changed into a prime (20115247) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16715 + ... + 17877.

Almost surely, 2^20115248 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20115248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20784384).

20115248 is an abundant number, since it is smaller than the sum of its proper divisors (21453520).

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

20115248 is a wasteful number, since it uses less digits than its factorization.

20115248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1241 (or 1235 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 20115248 is about 4485.0025641018. The cubic root of 20115248 is about 271.9621487121.

Subtracting from 20115248 its sum of digits (23), we obtain a square (20115225 = 4485²).

The spelling of 20115248 in words is "twenty million, one hundred fifteen thousand, two hundred forty-eight".