20901248 has 32 divisors (see below), whose sum is σ = 41858760. Its totient is φ = 10395648.

The previous prime is 20901247. The next prime is 20901259. The reversal of 20901248 is 84210902.

It is a tau number, because it is divible by the number of its divisors (32).

It is a super-3 number, since 3×20901248³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20901241) 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 3 ways as a sum of consecutive naturals, for example, 35936 + ... + 36512.

Almost surely, 2^20901248 is an apocalyptic number.

It is an amenable number.

20901248 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

20901248 is an equidigital number, since it uses as much as digits as its factorization.

20901248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874 (or 862 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 20901248 is about 4571.7882715629. The cubic root of 20901248 is about 275.4592788102.

The spelling of 20901248 in words is "twenty million, nine hundred one thousand, two hundred forty-eight".