245308520 has 32 divisors (see below), whose sum is σ = 566865000. Its totient is φ = 95470848.

The previous prime is 245308519. The next prime is 245308529. The reversal of 245308520 is 25803542.

It can be written as a sum of positive squares in 4 ways, for example, as 241056676 + 4251844 = 15526^2 + 2062^2 .

It is not an unprimeable number, because it can be changed into a prime (245308529) 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, 81395 + ... + 84354.

Almost surely, 2^245308520 is an apocalyptic number.

245308520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245308520 is an abundant number, since it is smaller than the sum of its proper divisors (321556480).

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

245308520 is a wasteful number, since it uses less digits than its factorization.

245308520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165797 (or 165793 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 29.

The square root of 245308520 is about 15662.3280517297. The cubic root of 245308520 is about 625.9950187929.

The spelling of 245308520 in words is "two hundred forty-five million, three hundred eight thousand, five hundred twenty".