28422652720 has 80 divisors (see below), whose sum is σ = 82388798208. Its totient is φ = 8859006720.

The previous prime is 28422652697. The next prime is 28422652723. The reversal of 28422652720 is 2725622482.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (28422652723) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2300874 + ... + 2313193.

Almost surely, 2^28422652720 is an apocalyptic number.

28422652720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28422652720 is an abundant number, since it is smaller than the sum of its proper divisors (53966145488).

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

28422652720 is a wasteful number, since it uses less digits than its factorization.

28422652720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4614098 (or 4614092 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 40.

It can be divided in two parts, 2842 and 2652720, that added together give a palindrome (2655562).

The spelling of 28422652720 in words is "twenty-eight billion, four hundred twenty-two million, six hundred fifty-two thousand, seven hundred twenty".