28024494432 has 144 divisors (see below), whose sum is σ = 81970081200. Its totient is φ = 8375685120.

The previous prime is 28024494427. The next prime is 28024494437. The reversal of 28024494432 is 23449442082.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (28024494427) and next prime (28024494437).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28024494437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 831444 + ... + 864492.

It is an arithmetic number, because the mean of its divisors is an integer number (569236675).

Almost surely, 2^28024494432 is an apocalyptic number.

28024494432 is a gapful number since it is divisible by the number (22) 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 28024494432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40985040600).

28024494432 is an abundant number, since it is smaller than the sum of its proper divisors (53945586768).

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

28024494432 is a wasteful number, since it uses less digits than its factorization.

28024494432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33157 (or 33138 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 42.

The spelling of 28024494432 in words is "twenty-eight billion, twenty-four million, four hundred ninety-four thousand, four hundred thirty-two".