209148 has 24 divisors (see below), whose sum is σ = 505680. Its totient is φ = 67200.

The previous prime is 209147. The next prime is 209159. The reversal of 209148 is 841902.

209148 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a zygodrome in base 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (209147) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48 + ... + 648.

It is an arithmetic number, because the mean of its divisors is an integer number (21070).

2²⁰⁹¹⁴⁸ 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 209148, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (252840).

209148 is an abundant number, since it is smaller than the sum of its proper divisors (296532).

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

209148 is a wasteful number, since it uses less digits than its factorization.

209148 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 637 (or 635 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 24.

The square root of 209148 is about 457.3270164773. The cubic root of 209148 is about 59.3587261032.

The spelling of 209148 in words is "two hundred nine thousand, one hundred forty-eight".