28844923639896 has 768 divisors, whose sum is σ = 106363742284800. Its totient is φ = 6849151561728.

The previous prime is 28844923639849. The next prime is 28844923639927. The reversal of 28844923639896 is 69893632944882.

It is a happy number.

28844923639896 is a `hidden beast` number, since 2 + 8 + 8 + 4 + 492 + 3 + 6 + 39 + 8 + 96 = 666.

It is a super-2 number, since 2×28844923639896² (a number of 28 digits) contains 22 as substring.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 197987590 + ... + 198133226.

It is an arithmetic number, because the mean of its divisors is an integer number (138494456100).

Almost surely, 2^{28844923639896} is an apocalyptic number.

28844923639896 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 28844923639896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53181871142400).

28844923639896 is an abundant number, since it is smaller than the sum of its proper divisors (77518818644904).

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

28844923639896 is a wasteful number, since it uses less digits than its factorization.

28844923639896 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145768 (or 145761 counting only the distinct ones).

The product of its digits is 7739670528, while the sum is 81.

The spelling of 28844923639896 in words is "twenty-eight trillion, eight hundred forty-four billion, nine hundred twenty-three million, six hundred thirty-nine thousand, eight hundred ninety-six".