1020836 has 6 divisors (see below), whose sum is σ = 1786470. Its totient is φ = 510416.

The previous prime is 1020827. The next prime is 1020839. The reversal of 1020836 is 6380201.

It can be written as a sum of positive squares in only one way, i.e., 902500 + 118336 = 950^2 + 344^2 .

It is a super-2 number, since 2×1020836² = 2084212277792, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020839) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 127601 + ... + 127608.

It is an arithmetic number, because the mean of its divisors is an integer number (297745).

2^1020836 is an apocalyptic number.

It is an amenable number.

1020836 is a deficient number, since it is larger than the sum of its proper divisors (765634).

1020836 is a wasteful number, since it uses less digits than its factorization.

1020836 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 255213 (or 255211 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 1020836 is about 1010.3642907387. The cubic root of 1020836 is about 100.6897646416.

The spelling of 1020836 in words is "one million, twenty thousand, eight hundred thirty-six".