245041220 has 12 divisors (see below), whose sum is σ = 514586604. Its totient is φ = 98016480.

The previous prime is 245041211. The next prime is 245041229. The reversal of 245041220 is 22140542.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (245041211) and next prime (245041229).

It can be written as a sum of positive squares in 2 ways, for example, as 148254976 + 96786244 = 12176^2 + 9838^2 .

It is a Harshad number since it is a multiple of its sum of digits (20), and also a Moran number because the ratio is a prime number: 12252061 = 245041220 / (2 + 4 + 5 + 0 + 4 + 1 + 2 + 2 + 0).

It is a junction number, because it is equal to n+sod(n) for n = 245041192 and 245041201.

It is not an unprimeable number, because it can be changed into a prime (245041229) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 6126011 + ... + 6126050.

It is an arithmetic number, because the mean of its divisors is an integer number (42882217).

Almost surely, 2^245041220 is an apocalyptic number.

245041220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

245041220 is an abundant number, since it is smaller than the sum of its proper divisors (269545384).

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

245041220 is a wasteful number, since it uses less digits than its factorization.

245041220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12252070 (or 12252068 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 245041220 is about 15653.7925117206. The cubic root of 245041220 is about 625.7675646985.

Adding to 245041220 its reverse (22140542), we get a palindrome (267181762).

The spelling of 245041220 in words is "two hundred forty-five million, forty-one thousand, two hundred twenty".