260242220 has 24 divisors (see below), whose sum is σ = 624581664. Its totient is φ = 89225856.

The previous prime is 260242219. The next prime is 260242223. The reversal of 260242220 is 22242062.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 260242192 and 260242201.

It is not an unprimeable number, because it can be changed into a prime (260242223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 929297 + ... + 929576.

It is an arithmetic number, because the mean of its divisors is an integer number (26024236).

Almost surely, 2^260242220 is an apocalyptic number.

260242220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

260242220 is an abundant number, since it is smaller than the sum of its proper divisors (364339444).

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

260242220 is a wasteful number, since it uses less digits than its factorization.

260242220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1858889 (or 1858887 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 260242220 is about 16132.0246714416. The cubic root of 260242220 is about 638.4485696753.

Adding to 260242220 its reverse (22242062), we get a palindrome (282484282).

The spelling of 260242220 in words is "two hundred sixty million, two hundred forty-two thousand, two hundred twenty".