1028626 has 4 divisors (see below), whose sum is σ = 1542942. Its totient is φ = 514312.

The previous prime is 1028617. The next prime is 1028647. The reversal of 1028626 is 6268201.

1028626 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in only one way, i.e., 998001 + 30625 = 999^2 + 175^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1028626.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 257155 + ... + 257158.

2^1028626 is an apocalyptic number.

1028626 is a deficient number, since it is larger than the sum of its proper divisors (514316).

1028626 is an equidigital number, since it uses as much as digits as its factorization.

1028626 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 514315.

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 1028626 is about 1014.2120093945. The cubic root of 1028626 is about 100.9452371165.

The spelling of 1028626 in words is "one million, twenty-eight thousand, six hundred twenty-six".