1028015 has 4 divisors (see below), whose sum is σ = 1233624. Its totient is φ = 822408.

The previous prime is 1028011. The next prime is 1028017. The reversal of 1028015 is 5108201.

1028015 is nontrivially palindromic in base 4 and base 16.

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 1028015 - 2² = 1028011 is a prime.

It is a Duffinian number.

1028015 is an undulating number in base 16.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 1027984 and 1028002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1028011) 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, 102797 + ... + 102806.

It is an arithmetic number, because the mean of its divisors is an integer number (308406).

2^1028015 is an apocalyptic number.

1028015 is a deficient number, since it is larger than the sum of its proper divisors (205609).

1028015 is an equidigital number, since it uses as much as digits as its factorization.

1028015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 205608.

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1028015 is about 1013.9107455787. The cubic root of 1028015 is about 100.9252461266.

The spelling of 1028015 in words is "one million, twenty-eight thousand, fifteen".