28785148734 has 8 divisors (see below), whose sum is σ = 57570297480. Its totient is φ = 9595049576.

The previous prime is 28785148723. The next prime is 28785148747. The reversal of 28785148734 is 43784158782.

It is a sphenic number, since it is the product of 3 distinct primes.

28785148734 is an admirable number.

It is a super-3 number, since 3×28785148734³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2398762389 + ... + 2398762400.

It is an arithmetic number, because the mean of its divisors is an integer number (7196287185).

Almost surely, 2^28785148734 is an apocalyptic number.

28785148734 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

28785148734 is a wasteful number, since it uses less digits than its factorization.

28785148734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4797524794.

The product of its digits is 12042240, while the sum is 57.

The spelling of 28785148734 in words is "twenty-eight billion, seven hundred eighty-five million, one hundred forty-eight thousand, seven hundred thirty-four".