920432728 has 16 divisors (see below), whose sum is σ = 1726195680. Its totient is φ = 460113888.

The previous prime is 920432671. The next prime is 920432729. The reversal of 920432728 is 827234029.

920432728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (920432729) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36550 + ... + 56362.

It is an arithmetic number, because the mean of its divisors is an integer number (107887230).

Almost surely, 2^920432728 is an apocalyptic number.

It is an amenable number.

920432728 is a deficient number, since it is larger than the sum of its proper divisors (805762952).

920432728 is a wasteful number, since it uses less digits than its factorization.

920432728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25626 (or 25622 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 920432728 is about 30338.6342474410. The cubic root of 920432728 is about 972.7412901497.

The spelling of 920432728 in words is "nine hundred twenty million, four hundred thirty-two thousand, seven hundred twenty-eight".