9628431 has 16 divisors (see below), whose sum is σ = 13284480. Its totient is φ = 6199200.

The previous prime is 9628403. The next prime is 9628433. The reversal of 9628431 is 1348269.

It is not a de Polignac number, because 9628431 - 2⁷ = 9628303 is a prime.

It is a super-2 number, since 2×9628431² = 185413367043522, which contains 22 as substring.

9628431 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 9628392 and 9628401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9628433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12660 + ... + 13398.

It is an arithmetic number, because the mean of its divisors is an integer number (830280).

Almost surely, 2^9628431 is an apocalyptic number.

9628431 is a deficient number, since it is larger than the sum of its proper divisors (3656049).

9628431 is a wasteful number, since it uses less digits than its factorization.

9628431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 886.

The product of its digits is 10368, while the sum is 33.

The square root of 9628431 is about 3102.9713179467. The cubic root of 9628431 is about 212.7413157074.

The spelling of 9628431 in words is "nine million, six hundred twenty-eight thousand, four hundred thirty-one".