245641320 has 48 divisors (see below), whose sum is σ = 798335460. Its totient is φ = 65504256.

The previous prime is 245641309. The next prime is 245641343. The reversal of 245641320 is 23146542.

245641320 is a `hidden beast` number, since 245 + 6 + 413 + 2 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 242798724 + 2842596 = 15582^2 + 1686^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 340809 + ... + 341528.

Almost surely, 2^245641320 is an apocalyptic number.

245641320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245641320 is an abundant number, since it is smaller than the sum of its proper divisors (552694140).

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

245641320 is a wasteful number, since it uses less digits than its factorization.

245641320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 682354 (or 682347 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 27.

The square root of 245641320 is about 15672.9486696027. The cubic root of 245641320 is about 626.2779781206.

Adding to 245641320 its reverse (23146542), we get a palindrome (268787862).

The spelling of 245641320 in words is "two hundred forty-five million, six hundred forty-one thousand, three hundred twenty".