1028567 has 4 divisors (see below), whose sum is σ = 1053696. Its totient is φ = 1003440.

The previous prime is 1028561. The next prime is 1028569. The reversal of 1028567 is 7658201.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1028567 - 2¹⁴ = 1012183 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028561) 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, 12503 + ... + 12584.

It is an arithmetic number, because the mean of its divisors is an integer number (263424).

2^1028567 is an apocalyptic number.

1028567 is a deficient number, since it is larger than the sum of its proper divisors (25129).

1028567 is an equidigital number, since it uses as much as digits as its factorization.

1028567 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25128.

The product of its (nonzero) digits is 3360, while the sum is 29.

The square root of 1028567 is about 1014.1829223567. The cubic root of 1028567 is about 100.9433070716.

The spelling of 1028567 in words is "one million, twenty-eight thousand, five hundred sixty-seven".