20124288 has 96 divisors (see below), whose sum is σ = 60147360. Its totient is φ = 6697728.

The previous prime is 20124271. The next prime is 20124323. The reversal of 20124288 is 88242102.

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

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30781 + ... + 31427.

It is an arithmetic number, because the mean of its divisors is an integer number (626535).

Almost surely, 2^20124288 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 20124288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30073680).

20124288 is an abundant number, since it is smaller than the sum of its proper divisors (40023072).

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

20124288 is an frugal number, since it uses more digits than its factorization.

20124288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 676 (or 652 counting only the distinct ones).

The product of its (nonzero) digits is 2048, while the sum is 27.

The square root of 20124288 is about 4486.0102541122. The cubic root of 20124288 is about 272.0028834758.

The spelling of 20124288 in words is "twenty million, one hundred twenty-four thousand, two hundred eighty-eight".