34143640 has 32 divisors (see below), whose sum is σ = 77021280. Its totient is φ = 13622272.

The previous prime is 34143631. The next prime is 34143673. The reversal of 34143640 is 4634143.

It is a happy number.

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, 19272 + ... + 20968.

It is an arithmetic number, because the mean of its divisors is an integer number (2406915).

Almost surely, 2^34143640 is an apocalyptic number.

It is an amenable number.

34143640 is an abundant number, since it is smaller than the sum of its proper divisors (42877640).

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

34143640 is a wasteful number, since it uses less digits than its factorization.

34143640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2211 (or 2207 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 25.

The square root of 34143640 is about 5843.2559416818. The cubic root of 34143640 is about 324.4167527431.

Adding to 34143640 its reverse (4634143), we get a palindrome (38777783).

It can be divided in two parts, 341 and 43640, that multiplied together give a triangular number (14881240 = T₅₄₅₅).

The spelling of 34143640 in words is "thirty-four million, one hundred forty-three thousand, six hundred forty".