20290188288 has 88 divisors (see below), whose sum is σ = 54145933920. Its totient is φ = 6755246080.

The previous prime is 20290188283. The next prime is 20290188307. The reversal of 20290188288 is 88288109202.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20290188283) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2887243 + ... + 2894261.

Almost surely, 2^20290188288 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 20290188288, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27072966960).

20290188288 is an abundant number, since it is smaller than the sum of its proper divisors (33855745632).

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

20290188288 is an equidigital number, since it uses as much as digits as its factorization.

20290188288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7983 (or 7965 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 48.

The spelling of 20290188288 in words is "twenty billion, two hundred ninety million, one hundred eighty-eight thousand, two hundred eighty-eight".