428097 has 4 divisors (see below), whose sum is σ = 570800. Its totient is φ = 285396.

The previous prime is 428093. The next prime is 428137. The reversal of 428097 is 790824.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 428097 - 2² = 428093 is a prime.

It is a D-number.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 428097.

It is not an unprimeable number, because it can be changed into a prime (428093) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71347 + ... + 71352.

It is an arithmetic number, because the mean of its divisors is an integer number (142700).

2⁴²⁸⁰⁹⁷ is an apocalyptic number.

It is an amenable number.

428097 is a deficient number, since it is larger than the sum of its proper divisors (142703).

428097 is a wasteful number, since it uses less digits than its factorization.

428097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 142702.

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 428097 is about 654.2912195651. The cubic root of 428097 is about 75.3669131802.

The spelling of 428097 in words is "four hundred twenty-eight thousand, ninety-seven".