34278320 has 40 divisors (see below), whose sum is σ = 80448720. Its totient is φ = 13582080.

The previous prime is 34278313. The next prime is 34278329. The reversal of 34278320 is 2387243.

It is a tau number, because it is divible by the number of its divisors (40).

It is not an unprimeable number, because it can be changed into a prime (34278329) 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, 6755 + ... + 10685.

It is an arithmetic number, because the mean of its divisors is an integer number (2011218).

Almost surely, 2^34278320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34278320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40224360).

34278320 is an abundant number, since it is smaller than the sum of its proper divisors (46170400).

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

34278320 is a wasteful number, since it uses less digits than its factorization.

34278320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4053 (or 4047 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 29.

The square root of 34278320 is about 5854.7689962970. The cubic root of 34278320 is about 324.8427483835.

The spelling of 34278320 in words is "thirty-four million, two hundred seventy-eight thousand, three hundred twenty".