28774564746 has 32 divisors (see below), whose sum is σ = 59859081216. Its totient is φ = 9211254000.

The previous prime is 28774564739. The next prime is 28774564757. The reversal of 28774564746 is 64746547782.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 28774564746.

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, 566100 + ... + 614831.

It is an arithmetic number, because the mean of its divisors is an integer number (1870596288).

Almost surely, 2^28774564746 is an apocalyptic number.

28774564746 is an abundant number, since it is smaller than the sum of its proper divisors (31084516470).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

28774564746 is a wasteful number, since it uses less digits than its factorization.

28774564746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1181098.

The product of its digits is 63221760, while the sum is 60.

The spelling of 28774564746 in words is "twenty-eight billion, seven hundred seventy-four million, five hundred sixty-four thousand, seven hundred forty-six".