28731582360 has 768 divisors, whose sum is σ = 112208745600. Its totient is φ = 6497501184.

The previous prime is 28731582337. The next prime is 28731582371. The reversal of 28731582360 is 6328513782.

28731582360 is a `hidden beast` number, since 2 + 8 + 7 + 3 + 1 + 582 + 3 + 60 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 296201832 + ... + 296201928.

Almost surely, 2^28731582360 is an apocalyptic number.

28731582360 is a gapful number since it is divisible by the number (20) 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 28731582360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56104372800).

28731582360 is an abundant number, since it is smaller than the sum of its proper divisors (83477163240).

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

28731582360 is a wasteful number, since it uses less digits than its factorization.

28731582360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 210 counting only the distinct ones).

The product of its (nonzero) digits is 483840, while the sum is 45.

The spelling of 28731582360 in words is "twenty-eight billion, seven hundred thirty-one million, five hundred eighty-two thousand, three hundred sixty".