34378728 has 16 divisors (see below), whose sum is σ = 85946880. Its totient is φ = 11459568.

The previous prime is 34378727. The next prime is 34378763. The reversal of 34378728 is 82787343.

It is a self number, because there is not a number n which added to its sum of digits gives 34378728.

It is not an unprimeable number, because it can be changed into a prime (34378727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 716200 + ... + 716247.

It is an arithmetic number, because the mean of its divisors is an integer number (5371680).

Almost surely, 2^34378728 is an apocalyptic number.

It is an amenable number.

34378728 is an abundant number, since it is smaller than the sum of its proper divisors (51568152).

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

34378728 is a wasteful number, since it uses less digits than its factorization.

34378728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1432456 (or 1432452 counting only the distinct ones).

The product of its digits is 225792, while the sum is 42.

The square root of 34378728 is about 5863.3376160682. The cubic root of 34378728 is about 325.1596154817.

The spelling of 34378728 in words is "thirty-four million, three hundred seventy-eight thousand, seven hundred twenty-eight".