261195726 has 32 divisors (see below), whose sum is σ = 573091200. Its totient is φ = 78704480.

The previous prime is 261195709. The next prime is 261195733. The reversal of 261195726 is 627591162.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 760 + ... + 22868.

It is an arithmetic number, because the mean of its divisors is an integer number (17909100).

Almost surely, 2^261195726 is an apocalyptic number.

261195726 is an abundant number, since it is smaller than the sum of its proper divisors (311895474).

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

261195726 is a wasteful number, since it uses less digits than its factorization.

261195726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22304.

The product of its digits is 45360, while the sum is 39.

The square root of 261195726 is about 16161.5508538011. The cubic root of 261195726 is about 639.2273602496.

The spelling of 261195726 in words is "two hundred sixty-one million, one hundred ninety-five thousand, seven hundred twenty-six".