28273680526 has 32 divisors (see below), whose sum is σ = 55268015040. Its totient is φ = 10527238656.

The previous prime is 28273680517. The next prime is 28273680527. The reversal of 28273680526 is 62508637282.

It is a super-3 number, since 3×28273680526³ (a number of 32 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 28273680526.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28273680527) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4566021 + ... + 4572208.

It is an arithmetic number, because the mean of its divisors is an integer number (1727125470).

Almost surely, 2^28273680526 is an apocalyptic number.

28273680526 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

28273680526 is a deficient number, since it is larger than the sum of its proper divisors (26994334514).

28273680526 is a wasteful number, since it uses less digits than its factorization.

28273680526 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9138268.

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 28273680526 in words is "twenty-eight billion, two hundred seventy-three million, six hundred eighty thousand, five hundred twenty-six".