28855799424 has 128 divisors (see below), whose sum is σ = 85445236800. Its totient is φ = 9586916352.

The previous prime is 28855799419. The next prime is 28855799447. The reversal of 28855799424 is 42499755882.

28855799424 = T₁₃₅₅₇ + T₁₃₅₅₈ + ... + T₁₃₈₆₃.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-3 number, since 3×28855799424³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

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, 1047394 + ... + 1074590.

Almost surely, 2^28855799424 is an apocalyptic number.

28855799424 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 28855799424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42722618400).

28855799424 is an abundant number, since it is smaller than the sum of its proper divisors (56589437376).

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

28855799424 is a wasteful number, since it uses less digits than its factorization.

28855799424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27527 (or 27509 counting only the distinct ones).

The product of its digits is 58060800, while the sum is 63.

The spelling of 28855799424 in words is "twenty-eight billion, eight hundred fifty-five million, seven hundred ninety-nine thousand, four hundred twenty-four".