245113440 has 192 divisors, whose sum is σ = 907345152. Its totient is φ = 54835200.

The previous prime is 245113439. The next prime is 245113469. The reversal of 245113440 is 44311542.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 245113440.

It is a congruent number.

It is an unprimeable 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 31 ways as a sum of consecutive naturals, for example, 66855 + ... + 70425.

It is an arithmetic number, because the mean of its divisors is an integer number (4725756).

Almost surely, 2^245113440 is an apocalyptic number.

245113440 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 245113440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (453672576).

245113440 is an abundant number, since it is smaller than the sum of its proper divisors (662231712).

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

245113440 is a wasteful number, since it uses less digits than its factorization.

245113440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3613 (or 3605 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 245113440 is about 15656.0991310096. The cubic root of 245113440 is about 625.8290353012.

Adding to 245113440 its reverse (44311542), we get a palindrome (289424982).

The spelling of 245113440 in words is "two hundred forty-five million, one hundred thirteen thousand, four hundred forty".