245234440 has 64 divisors (see below), whose sum is σ = 622728000. Its totient is φ = 86096640.

The previous prime is 245234399. The next prime is 245234453. The reversal of 245234440 is 44432542.

It is a super-2 number, since 2×245234440² = 120279861124227200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 245234399 and 245234408.

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, 3151 + ... + 22369.

It is an arithmetic number, because the mean of its divisors is an integer number (9730125).

Almost surely, 2^245234440 is an apocalyptic number.

245234440 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 245234440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311364000).

245234440 is an abundant number, since it is smaller than the sum of its proper divisors (377493560).

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

245234440 is a wasteful number, since it uses less digits than its factorization.

245234440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19270 (or 19266 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 28.

The square root of 245234440 is about 15659.9629629192. The cubic root of 245234440 is about 625.9319983158.

Adding to 245234440 its reverse (44432542), we get a palindrome (289666982).

The spelling of 245234440 in words is "two hundred forty-five million, two hundred thirty-four thousand, four hundred forty".