32146728 has 32 divisors (see below), whose sum is σ = 85095360. Its totient is φ = 10085120.

The previous prime is 32146717. The next prime is 32146733. The reversal of 32146728 is 82764123.

It is a super-2 number, since 2×32146728² = 2066824242211968, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38988 + ... + 39803.

It is an arithmetic number, because the mean of its divisors is an integer number (2659230).

Almost surely, 2^32146728 is an apocalyptic number.

It is an amenable number.

32146728 is an abundant number, since it is smaller than the sum of its proper divisors (52948632).

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

32146728 is a wasteful number, since it uses less digits than its factorization.

32146728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78817 (or 78813 counting only the distinct ones).

The product of its digits is 16128, while the sum is 33.

The square root of 32146728 is about 5669.8084623733. The cubic root of 32146728 is about 317.9647126700.

The spelling of 32146728 in words is "thirty-two million, one hundred forty-six thousand, seven hundred twenty-eight".