261174272 has 22 divisors (see below), whose sum is σ = 522095538. Its totient is φ = 130586624.

The previous prime is 261174259. The next prime is 261174289. The reversal of 261174272 is 272471162.

It can be written as a sum of positive squares in only one way, i.e., 233967616 + 27206656 = 15296^2 + 5216^2 .

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126503 + ... + 128550.

Almost surely, 2^261174272 is an apocalyptic number.

It is an amenable number.

261174272 is a deficient number, since it is larger than the sum of its proper divisors (260921266).

261174272 is an equidigital number, since it uses as much as digits as its factorization.

261174272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 255073 (or 255055 counting only the distinct ones).

The product of its digits is 9408, while the sum is 32.

The square root of 261174272 is about 16160.8871043640. The cubic root of 261174272 is about 639.2098582285.

The spelling of 261174272 in words is "two hundred sixty-one million, one hundred seventy-four thousand, two hundred seventy-two".