928431 has 12 divisors (see below), whose sum is σ = 1532752. Its totient is φ = 530496.

The previous prime is 928429. The next prime is 928453. The reversal of 928431 is 134829.

It is not a de Polignac number, because 928431 - 2¹ = 928429 is a prime.

It is a super-2 number, since 2×928431² = 1723968243522, which contains 22 as substring.

It is an Ulam number.

It is a Duffinian number.

It is a plaindrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 928395 and 928404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (928471) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7306 + ... + 7431.

2⁹²⁸⁴³¹ is an apocalyptic number.

928431 is a deficient number, since it is larger than the sum of its proper divisors (604321).

928431 is a wasteful number, since it uses less digits than its factorization.

928431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14750 (or 14747 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 928431 is about 963.5512440965. The cubic root of 928431 is about 97.5550773624. Note that the first 3 decimals are identical.

The spelling of 928431 in words is "nine hundred twenty-eight thousand, four hundred thirty-one".