260021236 has 12 divisors (see below), whose sum is σ = 457043328. Its totient is φ = 129437432.

The previous prime is 260021231. The next prime is 260021257. The reversal of 260021236 is 632120062.

It is a happy number.

It is a super-2 number, since 2×260021236² = 135222086341935392, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (260021231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 142276 + ... + 144091.

It is an arithmetic number, because the mean of its divisors is an integer number (38086944).

Almost surely, 2^260021236 is an apocalyptic number.

It is an amenable number.

260021236 is a deficient number, since it is larger than the sum of its proper divisors (197022092).

260021236 is a wasteful number, since it uses less digits than its factorization.

260021236 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286598 (or 286596 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 260021236 is about 16125.1739835575. The cubic root of 260021236 is about 638.2678061900.

Adding to 260021236 its reverse (632120062), we get a palindrome (892141298).

The spelling of 260021236 in words is "two hundred sixty million, twenty-one thousand, two hundred thirty-six".