28255532774 has 24 divisors (see below), whose sum is σ = 49518357840. Its totient is φ = 12056624496.

The previous prime is 28255532761. The next prime is 28255532779. The reversal of 28255532774 is 47723555282.

It is a hoax number, since the sum of its digits (50) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28255532779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 607082 + ... + 651965.

It is an arithmetic number, because the mean of its divisors is an integer number (2063264910).

Almost surely, 2^28255532774 is an apocalyptic number.

28255532774 is a deficient number, since it is larger than the sum of its proper divisors (21262825066).

28255532774 is a wasteful number, since it uses less digits than its factorization.

28255532774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259292 (or 1259285 counting only the distinct ones).

The product of its digits is 4704000, while the sum is 50.

The spelling of 28255532774 in words is "twenty-eight billion, two hundred fifty-five million, five hundred thirty-two thousand, seven hundred seventy-four".