245303440 has 20 divisors (see below), whose sum is σ = 570330684. Its totient is φ = 98121344.

The previous prime is 245303417. The next prime is 245303459. The reversal of 245303440 is 44303542.

245303440 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 132434064 + 112869376 = 11508^2 + 10624^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1533067 + ... + 1533226.

Almost surely, 2^245303440 is an apocalyptic number.

245303440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245303440 is an abundant number, since it is smaller than the sum of its proper divisors (325027244).

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

245303440 is a wasteful number, since it uses less digits than its factorization.

245303440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3066306 (or 3066300 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 25.

The square root of 245303440 is about 15662.1658783196. The cubic root of 245303440 is about 625.9906975995.

Adding to 245303440 its reverse (44303542), we get a palindrome (289606982).

The spelling of 245303440 in words is "two hundred forty-five million, three hundred three thousand, four hundred forty".