245434240 has 64 divisors (see below), whose sum is σ = 590078160. Its totient is φ = 97615872.

The previous prime is 245434213. The next prime is 245434247. The reversal of 245434240 is 42434542.

It is a tau number, because it is divible by the number of its divisors (64).

It is a junction number, because it is equal to n+sod(n) for n = 245434199 and 245434208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245434247) 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, 122527 + ... + 124513.

Almost surely, 2^245434240 is an apocalyptic number.

245434240 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 245434240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (295039080).

245434240 is an abundant number, since it is smaller than the sum of its proper divisors (344643920).

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

245434240 is a wasteful number, since it uses less digits than its factorization.

245434240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2199 (or 2187 counting only the distinct ones).

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

The square root of 245434240 is about 15666.3409895227. The cubic root of 245434240 is about 626.1019408205.

Adding to 245434240 its reverse (42434542), we get a palindrome (287868782).

The spelling of 245434240 in words is "two hundred forty-five million, four hundred thirty-four thousand, two hundred forty".