28143748794 has 16 divisors (see below), whose sum is σ = 64328568768. Its totient is φ = 8041071072.

The previous prime is 28143748747. The next prime is 28143748799. The reversal of 28143748794 is 49784734182.

It is a super-3 number, since 3×28143748794³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (28143748799) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 335044587 + ... + 335044670.

It is an arithmetic number, because the mean of its divisors is an integer number (4020535548).

Almost surely, 2^28143748794 is an apocalyptic number.

28143748794 is an abundant number, since it is smaller than the sum of its proper divisors (36184819974).

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

28143748794 is a wasteful number, since it uses less digits than its factorization.

28143748794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 670089269.

The product of its digits is 10838016, while the sum is 57.

The spelling of 28143748794 in words is "twenty-eight billion, one hundred forty-three million, seven hundred forty-eight thousand, seven hundred ninety-four".