261233084 has 48 divisors (see below), whose sum is σ = 566108928. Its totient is φ = 102912768.

The previous prime is 261233083. The next prime is 261233087. The reversal of 261233084 is 480332162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261233081) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14087 + ... + 26849.

It is an arithmetic number, because the mean of its divisors is an integer number (11793936).

Almost surely, 2^261233084 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261233084, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (283054464).

261233084 is an abundant number, since it is smaller than the sum of its proper divisors (304875844).

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

261233084 is a wasteful number, since it uses less digits than its factorization.

261233084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12834 (or 12832 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 261233084 is about 16162.7065802730. The cubic root of 261233084 is about 639.2578343537.

The spelling of 261233084 in words is "two hundred sixty-one million, two hundred thirty-three thousand, eighty-four".