245012440 has 32 divisors (see below), whose sum is σ = 551772000. Its totient is φ = 97917184.

The previous prime is 245012401. The next prime is 245012441. The reversal of 245012440 is 44210542.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245012441) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 60396 + ... + 64324.

It is an arithmetic number, because the mean of its divisors is an integer number (17242875).

Almost surely, 2^245012440 is an apocalyptic number.

245012440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245012440 is an abundant number, since it is smaller than the sum of its proper divisors (306759560).

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

245012440 is a wasteful number, since it uses less digits than its factorization.

245012440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5499 (or 5495 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 245012440 is about 15652.8732186778. The cubic root of 245012440 is about 625.7430650169.

Adding to 245012440 its reverse (44210542), we get a palindrome (289222982).

The spelling of 245012440 in words is "two hundred forty-five million, twelve thousand, four hundred forty".