261282444 has 48 divisors (see below), whose sum is σ = 625968000. Its totient is φ = 84793216.

The previous prime is 261282389. The next prime is 261282449. The reversal of 261282444 is 444282162.

261282444 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×261282444² = 136537031085226272, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (261282449) 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, 74032 + ... + 77480.

It is an arithmetic number, because the mean of its divisors is an integer number (13041000).

Almost surely, 2^261282444 is an apocalyptic number.

It is an amenable number.

261282444 is an abundant number, since it is smaller than the sum of its proper divisors (364685556).

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

261282444 is a wasteful number, since it uses less digits than its factorization.

261282444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3622 (or 3620 counting only the distinct ones).

The product of its digits is 24576, while the sum is 33.

The square root of 261282444 is about 16164.2334801252. The cubic root of 261282444 is about 639.2980944146.

It can be divided in two parts, 261282 and 444, that added together give a triangular number (261726 = T₇₂₃).

The spelling of 261282444 in words is "two hundred sixty-one million, two hundred eighty-two thousand, four hundred forty-four".