28025977352 has 8 divisors (see below), whose sum is σ = 52548707550. Its totient is φ = 14012988672.

The previous prime is 28025977333. The next prime is 28025977363. The reversal of 28025977352 is 25377952082.

It can be written as a sum of positive squares in only one way, i.e., 24697379716 + 3328597636 = 157154^2 + 57694^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 28025977352.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1751623577 + ... + 1751623592.

Almost surely, 2^28025977352 is an apocalyptic number.

It is an amenable number.

28025977352 is a deficient number, since it is larger than the sum of its proper divisors (24522730198).

28025977352 is a wasteful number, since it uses less digits than its factorization.

28025977352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3503247175 (or 3503247171 counting only the distinct ones).

The product of its (nonzero) digits is 2116800, while the sum is 50.

The spelling of 28025977352 in words is "twenty-eight billion, twenty-five million, nine hundred seventy-seven thousand, three hundred fifty-two".