245868220 has 24 divisors (see below), whose sum is σ = 556041024. Its totient is φ = 90782016.

The previous prime is 245868209. The next prime is 245868241. The reversal of 245868220 is 22868542.

It is a self number, because there is not a number n which added to its sum of digits gives 245868220.

It is a congruent number.

It is an unprimeable number.

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, 472564 + ... + 473083.

It is an arithmetic number, because the mean of its divisors is an integer number (23168376).

Almost surely, 2^245868220 is an apocalyptic number.

245868220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245868220 is an abundant number, since it is smaller than the sum of its proper divisors (310172804).

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

245868220 is a wasteful number, since it uses less digits than its factorization.

245868220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 945669 (or 945667 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 37.

The square root of 245868220 is about 15680.1855856364. The cubic root of 245868220 is about 626.4707507130.

The spelling of 245868220 in words is "two hundred forty-five million, eight hundred sixty-eight thousand, two hundred twenty".