28631795398782 has 128 divisors (see below), whose sum is σ = 60104170229760. Its totient is φ = 9085734627840.

The previous prime is 28631795398757. The next prime is 28631795398793. The reversal of 28631795398782 is 28789359713682.

It is a junction number, because it is equal to n+sod(n) for n = 28631795398698 and 28631795398707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1874168928 + ... + 1874184204.

It is an arithmetic number, because the mean of its divisors is an integer number (469563829920).

Almost surely, 2^{28631795398782} is an apocalyptic number.

28631795398782 is an abundant number, since it is smaller than the sum of its proper divisors (31472374830978).

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

28631795398782 is a wasteful number, since it uses less digits than its factorization.

28631795398782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16698.

The product of its digits is 2194698240, while the sum is 78.

The spelling of 28631795398782 in words is "twenty-eight trillion, six hundred thirty-one billion, seven hundred ninety-five million, three hundred ninety-eight thousand, seven hundred eighty-two".