27800880428 has 12 divisors (see below), whose sum is σ = 48658783992. Its totient is φ = 13898370720.

The previous prime is 27800880407. The next prime is 27800880431. The reversal of 27800880428 is 82408800872.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 486950 + ... + 541037.

It is an arithmetic number, because the mean of its divisors is an integer number (4054898666).

Almost surely, 2^27800880428 is an apocalyptic number.

It is an amenable number.

27800880428 is a deficient number, since it is larger than the sum of its proper divisors (20857903564).

27800880428 is a wasteful number, since it uses less digits than its factorization.

27800880428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1034752 (or 1034750 counting only the distinct ones).

The product of its (nonzero) digits is 458752, while the sum is 47.

The spelling of 27800880428 in words is "twenty-seven billion, eight hundred million, eight hundred eighty thousand, four hundred twenty-eight".