40548 has 24 divisors (see below), whose sum is σ = 98560. Its totient is φ = 12960.

The previous prime is 40543. The next prime is 40559. The reversal of 40548 is 84504.

40548 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Smith number, since the sum of its digits (21) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (40543) by changing a digit.

40548 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318 + ... + 426.

2⁴⁰⁵⁴⁸ is an apocalyptic number.

It is an amenable number.

40548 is an abundant number, since it is smaller than the sum of its proper divisors (58012).

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

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49280).

40548 is a wasteful number, since it uses less digits than its factorization.

40548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147 (or 145 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 40548 is about 201.3653396193. The cubic root of 40548 is about 34.3549889039.

Subtracting 40548 from its reverse (84504), we obtain a triangular number (43956 = T₂₉₆).

The spelling of 40548 in words is "forty thousand, five hundred forty-eight".