34440340 has 48 divisors (see below), whose sum is σ = 81051264. Its totient is φ = 12182400.

The previous prime is 34440337. The next prime is 34440347. The reversal of 34440340 is 4304443.

It is a happy number.

It is a super-2 number, since 2×34440340² = 2372274038631200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34440347) 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, 6025 + ... + 10255.

It is an arithmetic number, because the mean of its divisors is an integer number (1688568).

Almost surely, 2^34440340 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 34440340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (40525632).

34440340 is an abundant number, since it is smaller than the sum of its proper divisors (46610924).

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

34440340 is a wasteful number, since it uses less digits than its factorization.

34440340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4288 (or 4286 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 34440340 is about 5868.5892682995. The cubic root of 34440340 is about 325.3537450054.

Adding to 34440340 its reverse (4304443), we get a palindrome (38744783).

It can be divided in two parts, 344403 and 40, that added together give a palindrome (344443).

The spelling of 34440340 in words is "thirty-four million, four hundred forty thousand, three hundred forty".