28610823488 has 56 divisors (see below), whose sum is σ = 61480004040. Its totient is φ = 13131970560.

The previous prime is 28610823469. The next prime is 28610823529. The reversal of 28610823488 is 88432801682.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 518381824 + 28092441664 = 22768^2 + 167608^2 .

It is a super-2 number, since 2×28610823488² (a number of 22 digits) contains 22 as substring.

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, 55598 + ... + 245586.

It is an arithmetic number, because the mean of its divisors is an integer number (1097857215).

Almost surely, 2^28610823488 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 28610823488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30740002020).

28610823488 is an abundant number, since it is smaller than the sum of its proper divisors (32869180552).

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

28610823488 is a wasteful number, since it uses less digits than its factorization.

28610823488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 190195 (or 190185 counting only the distinct ones).

The product of its (nonzero) digits is 1179648, while the sum is 50.

The spelling of 28610823488 in words is "twenty-eight billion, six hundred ten million, eight hundred twenty-three thousand, four hundred eighty-eight".