333745728 has 56 divisors (see below), whose sum is σ = 893003040. Its totient is φ = 109992960.

The previous prime is 333745723. The next prime is 333745757. The reversal of 333745728 is 827547333.

It is a super-2 number, since 2×333745728² = 222772421916499968, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 333745728.

It is not an unprimeable number, because it can be changed into a prime (333745723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7323 + ... + 26853.

Almost surely, 2^333745728 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 333745728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (446501520).

333745728 is an abundant number, since it is smaller than the sum of its proper divisors (559257312).

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

333745728 is a wasteful number, since it uses less digits than its factorization.

333745728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19635 (or 19625 counting only the distinct ones).

The product of its digits is 423360, while the sum is 42.

The square root of 333745728 is about 18268.7089855852. The cubic root of 333745728 is about 693.6470950037.

The spelling of 333745728 in words is "three hundred thirty-three million, seven hundred forty-five thousand, seven hundred twenty-eight".