28733747328 has 512 divisors, whose sum is σ = 101602771200. Its totient is φ = 7878574080.

The previous prime is 28733747311. The next prime is 28733747347. The reversal of 28733747328 is 82374733782.

It is a happy number.

28733747328 is a `hidden beast` number, since 287 + 3 + 37 + 4 + 7 + 328 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 26192476 + ... + 26193572.

Almost surely, 2^28733747328 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 28733747328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50801385600).

28733747328 is an abundant number, since it is smaller than the sum of its proper divisors (72869023872).

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

28733747328 is a wasteful number, since it uses less digits than its factorization.

28733747328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1197 (or 1179 counting only the distinct ones).

The product of its digits is 9483264, while the sum is 54.

The spelling of 28733747328 in words is "twenty-eight billion, seven hundred thirty-three million, seven hundred forty-seven thousand, three hundred twenty-eight".