28350802785 has 32 divisors (see below), whose sum is σ = 48859176960. Its totient is φ = 13991479488.

The previous prime is 28350802783. The next prime is 28350802789. The reversal of 28350802785 is 58720805382.

It is not a de Polignac number, because 28350802785 - 2¹ = 28350802783 is a prime.

It is not an unprimeable number, because it can be changed into a prime (28350802783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1144449 + ... + 1168958.

It is an arithmetic number, because the mean of its divisors is an integer number (1526849280).

Almost surely, 2^28350802785 is an apocalyptic number.

It is an amenable number.

28350802785 is a deficient number, since it is larger than the sum of its proper divisors (20508374175).

28350802785 is a wasteful number, since it uses less digits than its factorization.

28350802785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2313477.

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 28350802785 in words is "twenty-eight billion, three hundred fifty million, eight hundred two thousand, seven hundred eighty-five".