34420340 has 24 divisors (see below), whose sum is σ = 72462600. Its totient is φ = 13733888.

The previous prime is 34420327. The next prime is 34420357. The reversal of 34420340 is 4302443.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 1747684 + 32672656 = 1322^2 + 5716^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7064 + ... + 10896.

It is an arithmetic number, because the mean of its divisors is an integer number (3019275).

Almost surely, 2^34420340 is an apocalyptic number.

It is an amenable number.

34420340 is an abundant number, since it is smaller than the sum of its proper divisors (38042260).

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

34420340 is a wasteful number, since it uses less digits than its factorization.

34420340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4291 (or 4289 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 34420340 is about 5866.8850338148. The cubic root of 34420340 is about 325.2907536132.

Adding to 34420340 its reverse (4302443), we get a palindrome (38722783).

The spelling of 34420340 in words is "thirty-four million, four hundred twenty thousand, three hundred forty".