245727140 has 24 divisors (see below), whose sum is σ = 519124032. Its totient is φ = 97700960.

The previous prime is 245727113. The next prime is 245727143. The reversal of 245727140 is 41727542.

It is a junction number, because it is equal to n+sod(n) for n = 245727097 and 245727106.

It is not an unprimeable number, because it can be changed into a prime (245727143) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33446 + ... + 40125.

It is an arithmetic number, because the mean of its divisors is an integer number (21630168).

Almost surely, 2^245727140 is an apocalyptic number.

245727140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245727140 is an abundant number, since it is smaller than the sum of its proper divisors (273396892).

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

245727140 is a wasteful number, since it uses less digits than its factorization.

245727140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73747 (or 73745 counting only the distinct ones).

The product of its (nonzero) digits is 15680, while the sum is 32.

The square root of 245727140 is about 15675.6862688687. The cubic root of 245727140 is about 626.3509041225.

The spelling of 245727140 in words is "two hundred forty-five million, seven hundred twenty-seven thousand, one hundred forty".