28374709788 has 18 divisors (see below), whose sum is σ = 71724960944. Its totient is φ = 9458236584.

The previous prime is 28374709751. The next prime is 28374709793. The reversal of 28374709788 is 88790747382.

28374709788 is a `hidden beast` number, since 2 + 83 + 7 + 470 + 9 + 7 + 88 = 666.

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 394093156 + ... + 394093227.

Almost surely, 2^28374709788 is an apocalyptic number.

It is an amenable number.

28374709788 is an abundant number, since it is smaller than the sum of its proper divisors (43350251156).

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

28374709788 is a wasteful number, since it uses less digits than its factorization.

28374709788 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788186393 (or 788186388 counting only the distinct ones).

The product of its (nonzero) digits is 37933056, while the sum is 63.

The spelling of 28374709788 in words is "twenty-eight billion, three hundred seventy-four million, seven hundred nine thousand, seven hundred eighty-eight".