1002920 has 16 divisors (see below), whose sum is σ = 2256660. Its totient is φ = 401152.

The previous prime is 1002917. The next prime is 1002929. The reversal of 1002920 is 292001.

It can be written as a sum of positive squares in 2 ways, for example, as 988036 + 14884 = 994^2 + 122^2 .

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1002895 and 1002904.

It is not an unprimeable number, because it can be changed into a prime (1002929) 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 in 3 ways as a sum of consecutive naturals, for example, 12497 + ... + 12576.

2^1002920 is an apocalyptic number.

1002920 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1002920 is an abundant number, since it is smaller than the sum of its proper divisors (1253740).

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

1002920 is a wasteful number, since it uses less digits than its factorization.

1002920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25084 (or 25080 counting only the distinct ones).

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

The square root of 1002920 is about 1001.4589357532. The cubic root of 1002920 is about 100.0972387489.

Adding to 1002920 its reverse (292001), we get a palindrome (1294921).

The spelling of 1002920 in words is "one million, two thousand, nine hundred twenty".