28278411248 has 20 divisors (see below), whose sum is σ = 55028684040. Its totient is φ = 14077460544.

The previous prime is 28278411223. The next prime is 28278411263. The reversal of 28278411248 is 84211487282.

It is a super-2 number, since 2×28278411248² (a number of 22 digits) contains 22 as substring.

It is a congruent 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, 3855290 + ... + 3862617.

It is an arithmetic number, because the mean of its divisors is an integer number (2751434202).

Almost surely, 2^28278411248 is an apocalyptic number.

It is an amenable number.

28278411248 is a deficient number, since it is larger than the sum of its proper divisors (26750272792).

28278411248 is a wasteful number, since it uses less digits than its factorization.

28278411248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7718144 (or 7718138 counting only the distinct ones).

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

The spelling of 28278411248 in words is "twenty-eight billion, two hundred seventy-eight million, four hundred eleven thousand, two hundred forty-eight".