245845140 has 48 divisors (see below), whose sum is σ = 694700160. Its totient is φ = 64955520.

The previous prime is 245845121. The next prime is 245845163. The reversal of 245845140 is 41548542.

It is a happy number.

245845140 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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, 12256 + ... + 25335.

It is an arithmetic number, because the mean of its divisors is an integer number (14472920).

Almost surely, 2^245845140 is an apocalyptic number.

245845140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245845140 is an abundant number, since it is smaller than the sum of its proper divisors (448855020).

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

245845140 is a wasteful number, since it uses less digits than its factorization.

245845140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37712 (or 37710 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 33.

The square root of 245845140 is about 15679.4496076871. The cubic root of 245845140 is about 626.4511475323.

The spelling of 245845140 in words is "two hundred forty-five million, eight hundred forty-five thousand, one hundred forty".