28077879376 has 10 divisors (see below), whose sum is σ = 54400891322. Its totient is φ = 14038939680.

The previous prime is 28077879359. The next prime is 28077879391. The reversal of 28077879376 is 67397877082.

It can be written as a sum of positive squares in only one way, i.e., 24625141776 + 3452737600 = 156924^2 + 58760^2 .

It is a super-2 number, since 2×28077879376² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 877433715 + ... + 877433746.

Almost surely, 2^28077879376 is an apocalyptic number.

It is an amenable number.

28077879376 is a deficient number, since it is larger than the sum of its proper divisors (26323011946).

28077879376 is a wasteful number, since it uses less digits than its factorization.

28077879376 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1754867469 (or 1754867463 counting only the distinct ones).

The product of its (nonzero) digits is 49787136, while the sum is 64.

The spelling of 28077879376 in words is "twenty-eight billion, seventy-seven million, eight hundred seventy-nine thousand, three hundred seventy-six".