245388 has 54 divisors (see below), whose sum is σ = 681492. Its totient is φ = 68640.

The previous prime is 245383. The next prime is 245389. The reversal of 245388 is 883542.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 245388.

It is not an unprimeable number, because it can be changed into a prime (245383) by changing a digit.

245388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 17 ways as a sum of consecutive naturals, for example, 18870 + ... + 18882.

245388 is a Friedman number, since it can be written as 858^(4-2)/3, using all its digits and the basic arithmetic operations.

2²⁴⁵³⁸⁸ 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 245388, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (340746).

245388 is an abundant number, since it is smaller than the sum of its proper divisors (436104).

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

245388 is a wasteful number, since it uses less digits than its factorization.

245388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55 (or 29 counting only the distinct ones).

The product of its digits is 7680, while the sum is 30.

The square root of 245388 is about 495.3665309647. The cubic root of 245388 is about 62.6062618988.

The spelling of 245388 in words is "two hundred forty-five thousand, three hundred eighty-eight".