28773448704 has 528 divisors, whose sum is σ = 111587374080. Its totient is φ = 6896517120.

The previous prime is 28773448679. The next prime is 28773448729. The reversal of 28773448704 is 40784437782.

It is an interprime number because it is at equal distance from previous prime (28773448679) and next prime (28773448729).

It is a tau number, because it is divible by the number of its divisors (528).

It is a super-2 number, since 2×28773448704² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 9223657 + ... + 9226775.

Almost surely, 2^28773448704 is an apocalyptic number.

28773448704 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 28773448704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55793687040).

28773448704 is an abundant number, since it is smaller than the sum of its proper divisors (82813925376).

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

28773448704 is a wasteful number, since it uses less digits than its factorization.

28773448704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3176 (or 3155 counting only the distinct ones).

The product of its (nonzero) digits is 8429568, while the sum is 54.

The spelling of 28773448704 in words is "twenty-eight billion, seven hundred seventy-three million, four hundred forty-eight thousand, seven hundred four".