28423398782 has 24 divisors (see below), whose sum is σ = 44186672376. Its totient is φ = 13705224624.

The previous prime is 28423398749. The next prime is 28423398833. The reversal of 28423398782 is 28789332482.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 510248 + ... + 563204.

It is an arithmetic number, because the mean of its divisors is an integer number (1841111349).

Almost surely, 2^28423398782 is an apocalyptic number.

28423398782 is a deficient number, since it is larger than the sum of its proper divisors (15763273594).

28423398782 is an equidigital number, since it uses as much as digits as its factorization.

28423398782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53160 (or 53081 counting only the distinct ones).

The product of its digits is 9289728, while the sum is 56.

The spelling of 28423398782 in words is "twenty-eight billion, four hundred twenty-three million, three hundred ninety-eight thousand, seven hundred eighty-two".