34280720 has 20 divisors (see below), whose sum is σ = 79702860. Its totient is φ = 13712256.

The previous prime is 34280683. The next prime is 34280747. The reversal of 34280720 is 2708243.

It can be written as a sum of positive squares in 2 ways, for example, as 6739216 + 27541504 = 2596^2 + 5248^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 34280720.

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, 214175 + ... + 214334.

It is an arithmetic number, because the mean of its divisors is an integer number (3985143).

Almost surely, 2^34280720 is an apocalyptic number.

It is an amenable number.

34280720 is an abundant number, since it is smaller than the sum of its proper divisors (45422140).

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

34280720 is a wasteful number, since it uses less digits than its factorization.

34280720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428522 (or 428516 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 26.

The square root of 34280720 is about 5854.9739538276. The cubic root of 34280720 is about 324.8503295057.

Adding to 34280720 its reverse (2708243), we get a palindrome (36988963).

The spelling of 34280720 in words is "thirty-four million, two hundred eighty thousand, seven hundred twenty".