28773733248 has 512 divisors, whose sum is σ = 98055619200. Its totient is φ = 8228044800.

The previous prime is 28773733229. The next prime is 28773733249. The reversal of 28773733248 is 84233737782.

It is a happy number.

28773733248 is a `hidden beast` number, since 28 + 7 + 7 + 373 + 3 + 248 = 666.

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

It is a junction number, because it is equal to n+sod(n) for n = 28773733194 and 28773733203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (28773733249) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 77141190 + ... + 77141562.

Almost surely, 2^28773733248 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 28773733248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49027809600).

28773733248 is an abundant number, since it is smaller than the sum of its proper divisors (69281885952).

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

28773733248 is a wasteful number, since it uses less digits than its factorization.

28773733248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 527 (or 509 counting only the distinct ones).

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

The spelling of 28773733248 in words is "twenty-eight billion, seven hundred seventy-three million, seven hundred thirty-three thousand, two hundred forty-eight".