28788399492 has 24 divisors (see below), whose sum is σ = 67176290496. Its totient is φ = 9595653408.

The previous prime is 28788399491. The next prime is 28788399503. The reversal of 28788399492 is 29499388782.

It is not an unprimeable number, because it can be changed into a prime (28788399491) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257118 + ... + 351690.

It is an arithmetic number, because the mean of its divisors is an integer number (2799012104).

Almost surely, 2^28788399492 is an apocalyptic number.

It is an amenable number.

28788399492 is an abundant number, since it is smaller than the sum of its proper divisors (38387891004).

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

28788399492 is a wasteful number, since it uses less digits than its factorization.

28788399492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 119947 (or 119945 counting only the distinct ones).

The product of its digits is 125411328, while the sum is 69.

The spelling of 28788399492 in words is "twenty-eight billion, seven hundred eighty-eight million, three hundred ninety-nine thousand, four hundred ninety-two".