34143920 has 20 divisors (see below), whose sum is σ = 79384800. Its totient is φ = 13657536.

The previous prime is 34143919. The next prime is 34143953. The reversal of 34143920 is 2934143.

It is a tau number, because it is divible by the number of its divisors (20).

It is a self number, because there is not a number n which added to its sum of digits gives 34143920.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 213320 + ... + 213479.

It is an arithmetic number, because the mean of its divisors is an integer number (3969240).

Almost surely, 2^34143920 is an apocalyptic number.

It is an amenable number.

34143920 is an abundant number, since it is smaller than the sum of its proper divisors (45240880).

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

34143920 is a wasteful number, since it uses less digits than its factorization.

34143920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426812 (or 426806 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 34143920 is about 5843.2799008776. The cubic root of 34143920 is about 324.4176395500.

The spelling of 34143920 in words is "thirty-four million, one hundred forty-three thousand, nine hundred twenty".