34440140 has 72 divisors (see below), whose sum is σ = 85149792. Its totient is φ = 11665920.

The previous prime is 34440127. The next prime is 34440151. The reversal of 34440140 is 4104443.

It is a super-2 number, since 2×34440140² = 2372246486439200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 110585 + ... + 110895.

It is an arithmetic number, because the mean of its divisors is an integer number (1182636).

Almost surely, 2^34440140 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 34440140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42574896).

34440140 is an abundant number, since it is smaller than the sum of its proper divisors (50709652).

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

34440140 is a wasteful number, since it uses less digits than its factorization.

34440140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 447 (or 438 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 34440140 is about 5868.5722284045. The cubic root of 34440140 is about 325.3531152122.

Adding to 34440140 its reverse (4104443), we get a palindrome (38544583).

The spelling of 34440140 in words is "thirty-four million, four hundred forty thousand, one hundred forty".