20748288 has 96 divisors (see below), whose sum is σ = 60540480. Its totient is φ = 6266880.

The previous prime is 20748271. The next prime is 20748319. The reversal of 20748288 is 88284702.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67431 + ... + 67737.

It is an arithmetic number, because the mean of its divisors is an integer number (630630).

Almost surely, 2^20748288 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 20748288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30270240).

20748288 is an abundant number, since it is smaller than the sum of its proper divisors (39792192).

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

20748288 is a wasteful number, since it uses less digits than its factorization.

20748288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343 (or 323 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 39.

The square root of 20748288 is about 4555.0288692828. The cubic root of 20748288 is about 274.7856754312.

The spelling of 20748288 in words is "twenty million, seven hundred forty-eight thousand, two hundred eighty-eight".