28394060377782 has 16 divisors (see below), whose sum is σ = 61950677188032. Its totient is φ = 8604260720520.

The previous prime is 28394060377759. The next prime is 28394060377807. The reversal of 28394060377782 is 28777306049382.

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 430213036027 = 28394060377782 / (2 + 8 + 3 + 9 + 4 + 0 + 6 + 0 + 3 + 7 + 7 + 7 + 8 + 2).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 215106517948 + ... + 215106518079.

It is an arithmetic number, because the mean of its divisors is an integer number (3871917324252).

Almost surely, 2^{28394060377782} is an apocalyptic number.

28394060377782 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

28394060377782 is an abundant number, since it is smaller than the sum of its proper divisors (33556616810250).

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

28394060377782 is a wasteful number, since it uses less digits than its factorization.

28394060377782 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 430213036043.

The product of its (nonzero) digits is 170698752, while the sum is 66.

The spelling of 28394060377782 in words is "twenty-eight trillion, three hundred ninety-four billion, sixty million, three hundred seventy-seven thousand, seven hundred eighty-two".