28803977343792 has 320 divisors, whose sum is σ = 99520423936000. Its totient is φ = 7792013521152.

The previous prime is 28803977343781. The next prime is 28803977343821. The reversal of 28803977343792 is 29734377930882.

28803977343792 is a `hidden beast` number, since 2 + 8 + 8 + 0 + 39 + 7 + 73 + 437 + 92 = 666.

It is a super-2 number, since 2×28803977343792² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 28803977343792.

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, 98851209 + ... + 99142167.

It is an arithmetic number, because the mean of its divisors is an integer number (311001324800).

Almost surely, 2^{28803977343792} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28803977343792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49760211968000).

28803977343792 is an abundant number, since it is smaller than the sum of its proper divisors (70716446592208).

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

28803977343792 is a wasteful number, since it uses less digits than its factorization.

28803977343792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 292725 (or 292713 counting only the distinct ones).

The product of its (nonzero) digits is 768144384, while the sum is 72.

The spelling of 28803977343792 in words is "twenty-eight trillion, eight hundred three billion, nine hundred seventy-seven million, three hundred forty-three thousand, seven hundred ninety-two".