245840868 has 144 divisors (see below), whose sum is σ = 773450496. Its totient is φ = 64108800.

The previous prime is 245840789. The next prime is 245840869. The reversal of 245840868 is 868048542.

245840868 is a `hidden beast` number, since 2 + 4 + 584 + 0 + 8 + 68 = 666.

It is not an unprimeable number, because it can be changed into a prime (245840869) 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 47 ways as a sum of consecutive naturals, for example, 330505 + ... + 331247.

It is an arithmetic number, because the mean of its divisors is an integer number (5371184).

Almost surely, 2^245840868 is an apocalyptic number.

245840868 is a gapful number since it is divisible by the number (28) 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 245840868, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (386725248).

245840868 is an abundant number, since it is smaller than the sum of its proper divisors (527609628).

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

245840868 is a wasteful number, since it uses less digits than its factorization.

245840868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 874 (or 869 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The square root of 245840868 is about 15679.3133778237. The cubic root of 245840868 is about 626.4475189408.

The spelling of 245840868 in words is "two hundred forty-five million, eight hundred forty thousand, eight hundred sixty-eight".