28894634496 has 640 divisors, whose sum is σ = 106766499840. Its totient is φ = 7512735744.

The previous prime is 28894634423. The next prime is 28894634521. The reversal of 28894634496 is 69443649882.

28894634496 is a `hidden beast` number, since 2 + 8 + 89 + 4 + 63 + 4 + 496 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a nude number because it is divisible by every one of its digits.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 129572241 + ... + 129572463.

It is an arithmetic number, because the mean of its divisors is an integer number (166822656).

Almost surely, 2^28894634496 is an apocalyptic number.

28894634496 is a gapful number since it is divisible by the number (26) 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 28894634496, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53383249920).

28894634496 is an abundant number, since it is smaller than the sum of its proper divisors (77871865344).

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

28894634496 is a wasteful number, since it uses less digits than its factorization.

28894634496 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 373 (or 351 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 63.

The spelling of 28894634496 in words is "twenty-eight billion, eight hundred ninety-four million, six hundred thirty-four thousand, four hundred ninety-six".