261271204 has 24 divisors (see below), whose sum is σ = 481913600. Its totient is φ = 123599520.

The previous prime is 261271189. The next prime is 261271259. The reversal of 261271204 is 402172162.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 73582 + ... + 77050.

Almost surely, 2^261271204 is an apocalyptic number.

It is an amenable number.

261271204 is a deficient number, since it is larger than the sum of its proper divisors (220642396).

261271204 is a wasteful number, since it uses less digits than its factorization.

261271204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4483 (or 4481 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 261271204 is about 16163.8857951917. The cubic root of 261271204 is about 639.2889270508.

The spelling of 261271204 in words is "two hundred sixty-one million, two hundred seventy-one thousand, two hundred four".