245344040 has 64 divisors (see below), whose sum is σ = 573123600. Its totient is φ = 94445568.

The previous prime is 245344027. The next prime is 245344063. The reversal of 245344040 is 40443542.

It can be written as a sum of positive squares in 8 ways, for example, as 113507716 + 131836324 = 10654^2 + 11482^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 142706 + ... + 144414.

Almost surely, 2^245344040 is an apocalyptic number.

245344040 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 245344040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (286561800).

245344040 is an abundant number, since it is smaller than the sum of its proper divisors (327779560).

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

245344040 is a wasteful number, since it uses less digits than its factorization.

245344040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1854 (or 1850 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 26.

The square root of 245344040 is about 15663.4619417292. The cubic root of 245344040 is about 626.0252314545.

Adding to 245344040 its reverse (40443542), we get a palindrome (285787582).

The spelling of 245344040 in words is "two hundred forty-five million, three hundred forty-four thousand, forty".