1022818 has 4 divisors (see below), whose sum is σ = 1534230. Its totient is φ = 511408.

The previous prime is 1022797. The next prime is 1022821. The reversal of 1022818 is 8182201.

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., 734449 + 288369 = 857^2 + 537^2 .

It is a super-2 number, since 2×1022818² = 2092313322248, which contains 22 as substring.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 255703 + ... + 255706.

2^1022818 is an apocalyptic number.

1022818 is a deficient number, since it is larger than the sum of its proper divisors (511412).

1022818 is an equidigital number, since it uses as much as digits as its factorization.

1022818 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 511411.

The product of its (nonzero) digits is 256, while the sum is 22.

The square root of 1022818 is about 1011.3446494643. The cubic root of 1022818 is about 100.7548871152.

The spelling of 1022818 in words is "one million, twenty-two thousand, eight hundred eighteen".