28552775750 has 32 divisors (see below), whose sum is σ = 53980059744. Its totient is φ = 11308020000.

The previous prime is 28552775707. The next prime is 28552775789. The reversal of 28552775750 is 5757725582.

It is a happy number.

It is a super-2 number, since 2×28552775750² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 28552775692 and 28552775701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 540152 + ... + 590651.

It is an arithmetic number, because the mean of its divisors is an integer number (1686876867).

Almost surely, 2^28552775750 is an apocalyptic number.

28552775750 is a deficient number, since it is larger than the sum of its proper divisors (25427283994).

28552775750 is a wasteful number, since it uses less digits than its factorization.

28552775750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1130921 (or 1130911 counting only the distinct ones).

The product of its (nonzero) digits is 6860000, while the sum is 53.

The spelling of 28552775750 in words is "twenty-eight billion, five hundred fifty-two million, seven hundred seventy-five thousand, seven hundred fifty".