28493397504 has 360 divisors, whose sum is σ = 97367085816. Its totient is φ = 7968153600.

The previous prime is 28493397479. The next prime is 28493397511. The reversal of 28493397504 is 40579339482.

28493397504 is a `hidden beast` number, since 2 + 8 + 49 + 3 + 3 + 97 + 504 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 7246419 + ... + 7250349.

Almost surely, 2^28493397504 is an apocalyptic number.

28493397504 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 28493397504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48683542908).

28493397504 is an abundant number, since it is smaller than the sum of its proper divisors (68873688312).

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

28493397504 is a wasteful number, since it uses less digits than its factorization.

28493397504 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3990 (or 3960 counting only the distinct ones).

The product of its (nonzero) digits is 6531840, while the sum is 54.

The spelling of 28493397504 in words is "twenty-eight billion, four hundred ninety-three million, three hundred ninety-seven thousand, five hundred four".