245306140 has 24 divisors (see below), whose sum is σ = 515541600. Its totient is φ = 98046528.

The previous prime is 245306119. The next prime is 245306143. The reversal of 245306140 is 41603542.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245306143) 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, 26886 + ... + 34834.

It is an arithmetic number, because the mean of its divisors is an integer number (21480900).

Almost surely, 2^245306140 is an apocalyptic number.

245306140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245306140 is an abundant number, since it is smaller than the sum of its proper divisors (270235460).

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

245306140 is a wasteful number, since it uses less digits than its factorization.

245306140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9501 (or 9499 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 245306140 is about 15662.2520730577. The cubic root of 245306140 is about 625.9929943042.

Adding to 245306140 its reverse (41603542), we get a palindrome (286909682).

The spelling of 245306140 in words is "two hundred forty-five million, three hundred six thousand, one hundred forty".