28394783394 has 32 divisors (see below), whose sum is σ = 57035978496. Its totient is φ = 9423943680.

The previous prime is 28394783393. The next prime is 28394783399. The reversal of 28394783394 is 49338749382.

It is not an unprimeable number, because it can be changed into a prime (28394783393) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1401424 + ... + 1421540.

It is an arithmetic number, because the mean of its divisors is an integer number (1782374328).

Almost surely, 2^28394783394 is an apocalyptic number.

28394783394 is an abundant number, since it is smaller than the sum of its proper divisors (28641195102).

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

28394783394 is a wasteful number, since it uses less digits than its factorization.

28394783394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21130.

The product of its digits is 31352832, while the sum is 60.

The spelling of 28394783394 in words is "twenty-eight billion, three hundred ninety-four million, seven hundred eighty-three thousand, three hundred ninety-four".