342645728 has 48 divisors (see below), whose sum is σ = 704350080. Its totient is φ = 163891200.

The previous prime is 342645707. The next prime is 342645739. The reversal of 342645728 is 827546243.

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, 86348 + ... + 90228.

It is an arithmetic number, because the mean of its divisors is an integer number (14673960).

Almost surely, 2^342645728 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 342645728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (352175040).

342645728 is an abundant number, since it is smaller than the sum of its proper divisors (361704352).

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

342645728 is a wasteful number, since it uses less digits than its factorization.

342645728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4011 (or 4003 counting only the distinct ones).

The product of its digits is 322560, while the sum is 41.

The square root of 342645728 is about 18510.6922615012. The cubic root of 342645728 is about 699.7589156180.

The spelling of 342645728 in words is "three hundred forty-two million, six hundred forty-five thousand, seven hundred twenty-eight".