245045140 has 48 divisors (see below), whose sum is σ = 552593664. Its totient is φ = 90944000.

The previous prime is 245045083. The next prime is 245045149. The reversal of 245045140 is 41540542.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (245045149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19065 + ... + 29215.

It is an arithmetic number, because the mean of its divisors is an integer number (11512368).

Almost surely, 2^245045140 is an apocalyptic number.

245045140 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 245045140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (276296832).

245045140 is an abundant number, since it is smaller than the sum of its proper divisors (307548524).

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

245045140 is a wasteful number, since it uses less digits than its factorization.

245045140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10248 (or 10246 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 245045140 is about 15653.9177204941. The cubic root of 245045140 is about 625.7709015463.

Adding to 245045140 its reverse (41540542), we get a palindrome (286585682).

The spelling of 245045140 in words is "two hundred forty-five million, forty-five thousand, one hundred forty".