261411284 has 12 divisors (see below), whose sum is σ = 477359904. Its totient is φ = 125022744.

The previous prime is 261411281. The next prime is 261411289. The reversal of 261411284 is 482114162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261411281) 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, 1420622 + ... + 1420805.

It is an arithmetic number, because the mean of its divisors is an integer number (39779992).

Almost surely, 2^261411284 is an apocalyptic number.

It is an amenable number.

261411284 is a deficient number, since it is larger than the sum of its proper divisors (215948620).

261411284 is a wasteful number, since it uses less digits than its factorization.

261411284 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2841454 (or 2841452 counting only the distinct ones).

The product of its digits is 3072, while the sum is 29.

The square root of 261411284 is about 16168.2183310345. The cubic root of 261411284 is about 639.4031577710.

The spelling of 261411284 in words is "two hundred sixty-one million, four hundred eleven thousand, two hundred eighty-four".