245538240 has 112 divisors (see below), whose sum is σ = 783457920. Its totient is φ = 65152000.

The previous prime is 245538229. The next prime is 245538257. The reversal of 245538240 is 42835542.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 240451 + ... + 241469.

It is an arithmetic number, because the mean of its divisors is an integer number (6995160).

Almost surely, 2^245538240 is an apocalyptic number.

245538240 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 245538240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (391728960).

245538240 is an abundant number, since it is smaller than the sum of its proper divisors (537919680).

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

245538240 is a wasteful number, since it uses less digits than its factorization.

245538240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1290 (or 1280 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

The square root of 245538240 is about 15669.6598559126. The cubic root of 245538240 is about 626.1903628853.

The spelling of 245538240 in words is "two hundred forty-five million, five hundred thirty-eight thousand, two hundred forty".