34021940 has 24 divisors (see below), whose sum is σ = 71646120. Its totient is φ = 13570688.

The previous prime is 34021931. The next prime is 34021963. The reversal of 34021940 is 4912043.

It can be written as a sum of positive squares in 4 ways, for example, as 1623076 + 32398864 = 1274^2 + 5692^2 .

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, 5594 + ... + 9966.

It is an arithmetic number, because the mean of its divisors is an integer number (2985255).

Almost surely, 2^34021940 is an apocalyptic number.

It is an amenable number.

34021940 is an abundant number, since it is smaller than the sum of its proper divisors (37624180).

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

34021940 is a wasteful number, since it uses less digits than its factorization.

34021940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4771 (or 4769 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 34021940 is about 5832.8329309179. The cubic root of 34021940 is about 324.0308485590.

Adding to 34021940 its reverse (4912043), we get a palindrome (38933983).

The spelling of 34021940 in words is "thirty-four million, twenty-one thousand, nine hundred forty".