34040840 has 32 divisors (see below), whose sum is σ = 78041880. Its totient is φ = 13358592.

The previous prime is 34040833. The next prime is 34040857. The reversal of 34040840 is 4804043.

It can be written as a sum of positive squares in 4 ways, for example, as 29571844 + 4468996 = 5438^2 + 2114^2 .

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, 5909 + ... + 10148.

Almost surely, 2^34040840 is an apocalyptic number.

It is an amenable number.

34040840 is an abundant number, since it is smaller than the sum of its proper divisors (44001040).

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

34040840 is a wasteful number, since it uses less digits than its factorization.

34040840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16121 (or 16117 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 34040840 is about 5834.4528449547. The cubic root of 34040840 is about 324.0908397426.

Adding to 34040840 its reverse (4804043), we get a palindrome (38844883).

The spelling of 34040840 in words is "thirty-four million, forty thousand, eight hundred forty".