28806078475944 has 576 divisors, whose sum is σ = 101422295694720. Its totient is φ = 7224233702400.

The previous prime is 28806078475903. The next prime is 28806078475963. The reversal of 28806078475944 is 44957487060882.

28806078475944 is a `hidden beast` number, since 2 + 8 + 8 + 0 + 60 + 7 + 8 + 475 + 94 + 4 = 666.

It is a super-2 number, since 2×28806078475944² (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 an unprimeable number.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 295540722 + ... + 295638174.

It is an arithmetic number, because the mean of its divisors is an integer number (176080374470).

Almost surely, 2^{28806078475944} is an apocalyptic number.

28806078475944 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28806078475944, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50711147847360).

28806078475944 is an abundant number, since it is smaller than the sum of its proper divisors (72616217218776).

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

28806078475944 is a wasteful number, since it uses less digits than its factorization.

28806078475944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97662 (or 97644 counting only the distinct ones).

The product of its (nonzero) digits is 867041280, while the sum is 72.

The spelling of 28806078475944 in words is "twenty-eight trillion, eight hundred six billion, seventy-eight million, four hundred seventy-five thousand, nine hundred forty-four".