69728328 has 48 divisors (see below), whose sum is σ = 198790800. Its totient is φ = 22019040.

The previous prime is 69728311. The next prime is 69728357. The reversal of 69728328 is 82382796.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 24118 + ... + 26853.

It is an arithmetic number, because the mean of its divisors is an integer number (4141475).

Almost surely, 2^69728328 is an apocalyptic number.

It is an amenable number.

69728328 is an abundant number, since it is smaller than the sum of its proper divisors (129062472).

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

69728328 is a wasteful number, since it uses less digits than its factorization.

69728328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51002 (or 50995 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 69728328 is about 8350.3489747435. The cubic root of 69728328 is about 411.5946778857.

The spelling of 69728328 in words is "sixty-nine million, seven hundred twenty-eight thousand, three hundred twenty-eight".