34440640 has 112 divisors (see below), whose sum is σ = 93707712. Its totient is φ = 11943936.

The previous prime is 34440631. The next prime is 34440643. The reversal of 34440640 is 4604443.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34440643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 70477 + ... + 70963.

It is an arithmetic number, because the mean of its divisors is an integer number (836676).

Almost surely, 2^34440640 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 34440640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (46853856).

34440640 is an abundant number, since it is smaller than the sum of its proper divisors (59267072).

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

34440640 is a wasteful number, since it uses less digits than its factorization.

34440640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 534 (or 524 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 25.

The square root of 34440640 is about 5868.6148280493. The cubic root of 34440640 is about 325.3546896906.

The spelling of 34440640 in words is "thirty-four million, four hundred forty thousand, six hundred forty".