245205400 has 96 divisors (see below), whose sum is σ = 625942080. Its totient is φ = 88592000.

The previous prime is 245205397. The next prime is 245205437. The reversal of 245205400 is 4502542.

245205400 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 499155 + ... + 499645.

It is an arithmetic number, because the mean of its divisors is an integer number (6520230).

Almost surely, 2^245205400 is an apocalyptic number.

245205400 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 245205400, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (312971040).

245205400 is an abundant number, since it is smaller than the sum of its proper divisors (380736680).

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

245205400 is a wasteful number, since it uses less digits than its factorization.

245205400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 745 (or 736 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 22.

The square root of 245205400 is about 15659.0357302102. The cubic root of 245205400 is about 625.9072902816.

Adding to 245205400 its reverse (4502542), we get a palindrome (249707942).

The spelling of 245205400 in words is "two hundred forty-five million, two hundred five thousand, four hundred".