28446501888 has 176 divisors, whose sum is σ = 96280399360. Its totient is φ = 8127516672.

The previous prime is 28446501857. The next prime is 28446501899. The reversal of 28446501888 is 88810564482.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120045 + ... + 267027.

Almost surely, 2^28446501888 is an apocalyptic number.

28446501888 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 28446501888, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48140199680).

28446501888 is an abundant number, since it is smaller than the sum of its proper divisors (67833897472).

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

28446501888 is a wasteful number, since it uses less digits than its factorization.

28446501888 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 147019 (or 146995 counting only the distinct ones).

The product of its (nonzero) digits is 3932160, while the sum is 54.

The spelling of 28446501888 in words is "twenty-eight billion, four hundred forty-six million, five hundred one thousand, eight hundred eighty-eight".