28299402432 has 224 divisors, whose sum is σ = 95346316800. Its totient is φ = 8062903296.

The previous prime is 28299402409. The next prime is 28299402473. The reversal of 28299402432 is 23420499282.

28299402432 is a `hidden beast` number, since 282 + 99 + 40 + 243 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (224).

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, 4581298 + ... + 4587470.

It is an arithmetic number, because the mean of its divisors is an integer number (425653200).

Almost surely, 2^28299402432 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 28299402432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47673158400).

28299402432 is an abundant number, since it is smaller than the sum of its proper divisors (67046914368).

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

28299402432 is a wasteful number, since it uses less digits than its factorization.

28299402432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6580 (or 6564 counting only the distinct ones).

The product of its (nonzero) digits is 497664, while the sum is 45.

The spelling of 28299402432 in words is "twenty-eight billion, two hundred ninety-nine million, four hundred two thousand, four hundred thirty-two".