28433318704 has 80 divisors (see below), whose sum is σ = 66810723840. Its totient is φ = 11458275840.

The previous prime is 28433318689. The next prime is 28433318717. The reversal of 28433318704 is 40781333482.

It is a super-2 number, since 2×28433318704² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58444 + ... + 245524.

It is an arithmetic number, because the mean of its divisors is an integer number (835134048).

Almost surely, 2^28433318704 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 28433318704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33405361920).

28433318704 is an abundant number, since it is smaller than the sum of its proper divisors (38377405136).

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

28433318704 is a wasteful number, since it uses less digits than its factorization.

28433318704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187178 (or 187172 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 43.

The spelling of 28433318704 in words is "twenty-eight billion, four hundred thirty-three million, three hundred eighteen thousand, seven hundred four".