98540 has 24 divisors (see below), whose sum is σ = 223440. Its totient is φ = 36288.

The previous prime is 98533. The next prime is 98543. The reversal of 98540 is 4589.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a nialpdrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (98543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71 + ... + 449.

It is an arithmetic number, because the mean of its divisors is an integer number (9310).

2⁹⁸⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 98540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111720).

98540 is an abundant number, since it is smaller than the sum of its proper divisors (124900).

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

98540 is a wasteful number, since it uses less digits than its factorization.

98540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 401 (or 399 counting only the distinct ones).

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

The square root of 98540 is about 313.9108153600. The cubic root of 98540 is about 46.1888893405.

The spelling of 98540 in words is "ninety-eight thousand, five hundred forty".