34743920 has 80 divisors (see below), whose sum is σ = 87181920. Its totient is φ = 12828672.

The previous prime is 34743911. The next prime is 34743923. The reversal of 34743920 is 2934743.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (34743923) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80024 + ... + 80456.

It is an arithmetic number, because the mean of its divisors is an integer number (1089774).

Almost surely, 2^34743920 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 34743920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43590960).

34743920 is an abundant number, since it is smaller than the sum of its proper divisors (52438000).

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

34743920 is a wasteful number, since it uses less digits than its factorization.

34743920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 522 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 34743920 is about 5894.3973398474. The cubic root of 34743920 is about 326.3069110898.

The spelling of 34743920 in words is "thirty-four million, seven hundred forty-three thousand, nine hundred twenty".