28694233394 has 8 divisors (see below), whose sum is σ = 45573194268. Its totient is φ = 13503168640.

The previous prime is 28694233363. The next prime is 28694233417. The reversal of 28694233394 is 49333249682.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 28641162169 + 53071225 = 169237^2 + 7285^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 421973987 + ... + 421974054.

Almost surely, 2^28694233394 is an apocalyptic number.

28694233394 is a deficient number, since it is larger than the sum of its proper divisors (16878960874).

28694233394 is a wasteful number, since it uses less digits than its factorization.

28694233394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 843948060.

The product of its digits is 6718464, while the sum is 53.

The spelling of 28694233394 in words is "twenty-eight billion, six hundred ninety-four million, two hundred thirty-three thousand, three hundred ninety-four".