245400 has 48 divisors (see below), whose sum is σ = 762600. Its totient is φ = 65280.

The previous prime is 245389. The next prime is 245407. The reversal of 245400 is 4542.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 245400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245407) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 396 + ... + 804.

2²⁴⁵⁴⁰⁰ is an apocalyptic number.

245400 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 245400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (381300).

245400 is an abundant number, since it is smaller than the sum of its proper divisors (517200).

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

245400 is a wasteful number, since it uses less digits than its factorization.

245400 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428 (or 419 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 15.

The square root of 245400 is about 495.3786430600. The cubic root of 245400 is about 62.6072824091.

Adding to 245400 its reverse (4542), we get a palindrome (249942).

It can be divided in two parts, 24 and 5400, that multiplied together give a square (129600 = 360²).

The spelling of 245400 in words is "two hundred forty-five thousand, four hundred".