28379406888 has 240 divisors, whose sum is σ = 94973635680. Its totient is φ = 7755206976.

The previous prime is 28379406877. The next prime is 28379406899. The reversal of 28379406888 is 88860497382.

28379406888 is a `hidden beast` number, since 2 + 83 + 79 + 406 + 8 + 88 = 666.

It is an interprime number because it is at equal distance from previous prime (28379406877) and next prime (28379406899).

It is a Harshad number since it is a multiple of its sum of digits (63).

It is an unprimeable number.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 2393631 + ... + 2405457.

It is an arithmetic number, because the mean of its divisors is an integer number (395723482).

Almost surely, 2^28379406888 is an apocalyptic number.

28379406888 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28379406888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47486817840).

28379406888 is an abundant number, since it is smaller than the sum of its proper divisors (66594228792).

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

28379406888 is a wasteful number, since it uses less digits than its factorization.

28379406888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11898 (or 11862 counting only the distinct ones).

The product of its (nonzero) digits is 37158912, while the sum is 63.

The spelling of 28379406888 in words is "twenty-eight billion, three hundred seventy-nine million, four hundred six thousand, eight hundred eighty-eight".