342881728 has 56 divisors (see below), whose sum is σ = 782433792. Its totient is φ = 146037504.

The previous prime is 342881717. The next prime is 342881741. The reversal of 342881728 is 827188243.

It is a tau number, because it is divible by the number of its divisors (56).

It is a hoax number, since the sum of its digits (43) coincides with the sum of the digits of its distinct prime factors.

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, 72525 + ... + 77107.

It is an arithmetic number, because the mean of its divisors is an integer number (13972032).

Almost surely, 2^342881728 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 342881728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391216896).

342881728 is an abundant number, since it is smaller than the sum of its proper divisors (439552064).

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

342881728 is a wasteful number, since it uses less digits than its factorization.

342881728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4769 (or 4759 counting only the distinct ones).

The product of its digits is 172032, while the sum is 43.

The square root of 342881728 is about 18517.0658582833. The cubic root of 342881728 is about 699.9195336077.

The spelling of 342881728 in words is "three hundred forty-two million, eight hundred eighty-one thousand, seven hundred twenty-eight".