980540 has 24 divisors (see below), whose sum is σ = 2246832. Its totient is φ = 356480.

The previous prime is 980503. The next prime is 980549. The reversal of 980540 is 45089.

It is a super-2 number, since 2×980540² = 1922917383200, which contains 22 as substring.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (980549) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 2009 + ... + 2448.

It is an arithmetic number, because the mean of its divisors is an integer number (93618).

2⁹⁸⁰⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

980540 is an abundant number, since it is smaller than the sum of its proper divisors (1266292).

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

980540 is a wasteful number, since it uses less digits than its factorization.

980540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4477 (or 4475 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 980540 is about 990.2221972871. Note that the first 3 decimals coincide. The cubic root of 980540 is about 99.3470795604.

The spelling of 980540 in words is "nine hundred eighty thousand, five hundred forty".