28392969293820 has 144 divisors (see below), whose sum is σ = 86198837437440. Its totient is φ = 7564999540608.

The previous prime is 28392969293809. The next prime is 28392969293851. The reversal of 28392969293820 is 2839296929382.

28392969293820 is a `hidden beast` number, since 2 + 83 + 92 + 9 + 69 + 29 + 382 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1638645997 + ... + 1638663323.

It is an arithmetic number, because the mean of its divisors is an integer number (598603037760).

Almost surely, 2^{28392969293820} is an apocalyptic number.

28392969293820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

28392969293820 is an abundant number, since it is smaller than the sum of its proper divisors (57805868143620).

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

28392969293820 is a wasteful number, since it uses less digits than its factorization.

28392969293820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24584 (or 24579 counting only the distinct ones).

The product of its (nonzero) digits is 362797056, while the sum is 72.

The spelling of 28392969293820 in words is "twenty-eight trillion, three hundred ninety-two billion, nine hundred sixty-nine million, two hundred ninety-three thousand, eight hundred twenty".