28348089744 has 120 divisors (see below), whose sum is σ = 82034303040. Its totient is φ = 8421643776.

The previous prime is 28348089733. The next prime is 28348089751. The reversal of 28348089744 is 44798084382.

It is a happy number.

It is a super-2 number, since 2×28348089744² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174997 + ... + 295499.

It is an arithmetic number, because the mean of its divisors is an integer number (683619192).

Almost surely, 2^28348089744 is an apocalyptic number.

28348089744 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 28348089744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (41017151520).

28348089744 is an abundant number, since it is smaller than the sum of its proper divisors (53686213296).

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

28348089744 is a wasteful number, since it uses less digits than its factorization.

28348089744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120569 (or 120550 counting only the distinct ones).

The product of its (nonzero) digits is 12386304, while the sum is 57.

The spelling of 28348089744 in words is "twenty-eight billion, three hundred forty-eight million, eighty-nine thousand, seven hundred forty-four".