245413220 has 48 divisors (see below), whose sum is σ = 579156480. Its totient is φ = 86672256.

The previous prime is 245413219. The next prime is 245413247. The reversal of 245413220 is 22314542.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14540 + ... + 26499.

It is an arithmetic number, because the mean of its divisors is an integer number (12065760).

Almost surely, 2^245413220 is an apocalyptic number.

245413220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245413220 is an abundant number, since it is smaller than the sum of its proper divisors (333743260).

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

245413220 is a wasteful number, since it uses less digits than its factorization.

245413220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41084 (or 41082 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 245413220 is about 15665.6701101485. The cubic root of 245413220 is about 626.0840663265.

Adding to 245413220 its reverse (22314542), we get a palindrome (267727762).

The spelling of 245413220 in words is "two hundred forty-five million, four hundred thirteen thousand, two hundred twenty".