245124220 has 72 divisors (see below), whose sum is σ = 569772000. Its totient is φ = 88513920.

The previous prime is 245124197. The next prime is 245124251. The reversal of 245124220 is 22421542.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a junction number, because it is equal to n+sod(n) for n = 245124191 and 245124200.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 481326 + ... + 481834.

It is an arithmetic number, because the mean of its divisors is an integer number (7913500).

Almost surely, 2^245124220 is an apocalyptic number.

245124220 is a gapful number since it is divisible by the number (20) 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 245124220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (284886000).

245124220 is an abundant number, since it is smaller than the sum of its proper divisors (324647780).

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

245124220 is a wasteful number, since it uses less digits than its factorization.

245124220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 739 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 245124220 is about 15656.4434019991. The cubic root of 245124220 is about 625.8382097445.

Adding to 245124220 its reverse (22421542), we get a palindrome (267545762).

The spelling of 245124220 in words is "two hundred forty-five million, one hundred twenty-four thousand, two hundred twenty".