928641 has 8 divisors (see below), whose sum is σ = 1415104. Its totient is φ = 530640.

The previous prime is 928637. The next prime is 928643. The reversal of 928641 is 146829.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 928641 - 2² = 928637 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 928599 and 928608.

It is not an unprimeable number, because it can be changed into a prime (928643) 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, 22090 + ... + 22131.

It is an arithmetic number, because the mean of its divisors is an integer number (176888).

2⁹²⁸⁶⁴¹ is an apocalyptic number.

It is an amenable number.

928641 is a deficient number, since it is larger than the sum of its proper divisors (486463).

928641 is a wasteful number, since it uses less digits than its factorization.

928641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44231.

The product of its digits is 3456, while the sum is 30.

The square root of 928641 is about 963.6602098250. The cubic root of 928641 is about 97.5624320723.

The spelling of 928641 in words is "nine hundred twenty-eight thousand, six hundred forty-one".