34294392728 has 16 divisors (see below), whose sum is σ = 64305361680. Its totient is φ = 17146296288.

The previous prime is 34294392709. The next prime is 34294392751. The reversal of 34294392728 is 82729349243.

It is a super-2 number, since 2×34294392728² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 34294392728.

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, 66101 + ... + 270107.

It is an arithmetic number, because the mean of its divisors is an integer number (4019085105).

Almost surely, 2^34294392728 is an apocalyptic number.

It is an amenable number.

34294392728 is a deficient number, since it is larger than the sum of its proper divisors (30010968952).

34294392728 is a wasteful number, since it uses less digits than its factorization.

34294392728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 225026 (or 225022 counting only the distinct ones).

The product of its digits is 5225472, while the sum is 53.

The spelling of 34294392728 in words is "thirty-four billion, two hundred ninety-four million, three hundred ninety-two thousand, seven hundred twenty-eight".