34505240 has 128 divisors (see below), whose sum is σ = 102643200. Its totient is φ = 10106880.

The previous prime is 34505239. The next prime is 34505243. The reversal of 34505240 is 4250543.

It is a super-2 number, since 2×34505240² = 2381223174915200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34505243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 52031 + ... + 52689.

It is an arithmetic number, because the mean of its divisors is an integer number (801900).

Almost surely, 2^34505240 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 34505240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51321600).

34505240 is an abundant number, since it is smaller than the sum of its proper divisors (68137960).

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

34505240 is a wasteful number, since it uses less digits than its factorization.

34505240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 705 (or 701 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 23.

The square root of 34505240 is about 5874.1161037215. The cubic root of 34505240 is about 325.5579842635.

Adding to 34505240 its reverse (4250543), we get a palindrome (38755783).

The spelling of 34505240 in words is "thirty-four million, five hundred five thousand, two hundred forty".