28555507344 has 160 divisors (see below), whose sum is σ = 92645459200. Its totient is φ = 7531066368.

The previous prime is 28555507339. The next prime is 28555507361. The reversal of 28555507344 is 44370555582.

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

It is a junction number, because it is equal to n+sod(n) for n = 28555507293 and 28555507302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147324 + ... + 280740.

It is an arithmetic number, because the mean of its divisors is an integer number (579034120).

Almost surely, 2^28555507344 is an apocalyptic number.

28555507344 is a gapful number since it is divisible by the number (24) 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 28555507344, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46322729600).

28555507344 is an abundant number, since it is smaller than the sum of its proper divisors (64089951856).

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

28555507344 is a wasteful number, since it uses less digits than its factorization.

28555507344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133462 (or 133442 counting only the distinct ones).

The product of its (nonzero) digits is 3360000, while the sum is 48.

The spelling of 28555507344 in words is "twenty-eight billion, five hundred fifty-five million, five hundred seven thousand, three hundred forty-four".