428697 has 24 divisors (see below), whose sum is σ = 686400. Its totient is φ = 256608.

The previous prime is 428693. The next prime is 428731. The reversal of 428697 is 796824.

It is not a de Polignac number, because 428697 - 2² = 428693 is a prime.

It is a super-2 number, since 2×428697² = 367562235618, which contains 22 as substring.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428697.

It is not an unprimeable number, because it can be changed into a prime (428693) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3879 + ... + 3987.

It is an arithmetic number, because the mean of its divisors is an integer number (28600).

2⁴²⁸⁶⁹⁷ is an apocalyptic number.

It is an amenable number.

428697 is a deficient number, since it is larger than the sum of its proper divisors (257703).

428697 is a wasteful number, since it uses less digits than its factorization.

428697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157 (or 154 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 428697 is about 654.7495704466. The cubic root of 428697 is about 75.4021069472.

The spelling of 428697 in words is "four hundred twenty-eight thousand, six hundred ninety-seven".