920867728 has 40 divisors (see below), whose sum is σ = 1973820096. Its totient is φ = 412675200.

The previous prime is 920867723. The next prime is 920867743. The reversal of 920867728 is 827768029.

920867728 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (920867723) 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, 24351 + ... + 49342.

Almost surely, 2^920867728 is an apocalyptic number.

It is an amenable number.

920867728 is an abundant number, since it is smaller than the sum of its proper divisors (1052952368).

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

920867728 is a wasteful number, since it uses less digits than its factorization.

920867728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73783 (or 73777 counting only the distinct ones).

The product of its (nonzero) digits is 677376, while the sum is 49.

The square root of 920867728 is about 30345.8024774432. The cubic root of 920867728 is about 972.8945064237.

The spelling of 920867728 in words is "nine hundred twenty million, eight hundred sixty-seven thousand, seven hundred twenty-eight".