34120440 has 80 divisors (see below), whose sum is σ = 114693480. Its totient is φ = 9097920.

The previous prime is 34120439. The next prime is 34120451. The reversal of 34120440 is 4402143.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2026 + ... + 8505.

Almost surely, 2^34120440 is an apocalyptic number.

34120440 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34120440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57346740).

34120440 is an abundant number, since it is smaller than the sum of its proper divisors (80573040).

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

34120440 is a wasteful number, since it uses less digits than its factorization.

34120440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10554 (or 10541 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 34120440 is about 5841.2704097653. The cubic root of 34120440 is about 324.3432576109.

Adding to 34120440 its reverse (4402143), we get a palindrome (38522583).

The spelling of 34120440 in words is "thirty-four million, one hundred twenty thousand, four hundred forty".