1020920 has 16 divisors (see below), whose sum is σ = 2297160. Its totient is φ = 408352.

The previous prime is 1020913. The next prime is 1020931. The reversal of 1020920 is 290201.

It is a junction number, because it is equal to n+sod(n) for n = 1020895 and 1020904.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12722 + ... + 12801.

2^1020920 is an apocalyptic number.

1020920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1020920 is an abundant number, since it is smaller than the sum of its proper divisors (1276240).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1020920 is a wasteful number, since it uses less digits than its factorization.

1020920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25534 (or 25530 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 14.

The square root of 1020920 is about 1010.4058590487. The cubic root of 1020920 is about 100.6925263351.

The spelling of 1020920 in words is "one million, twenty thousand, nine hundred twenty".