261436234 has 8 divisors (see below), whose sum is σ = 415222308. Its totient is φ = 123028800.

The previous prime is 261436229. The next prime is 261436267. The reversal of 261436234 is 432634162.

It can be written as a sum of positive squares in 2 ways, for example, as 256160025 + 5276209 = 16005^2 + 2297^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 261436196 and 261436205.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3844617 + ... + 3844684.

Almost surely, 2^261436234 is an apocalyptic number.

261436234 is a deficient number, since it is larger than the sum of its proper divisors (153786074).

261436234 is a wasteful number, since it uses less digits than its factorization.

261436234 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7689320.

The product of its digits is 20736, while the sum is 31.

The square root of 261436234 is about 16168.9898880542. The cubic root of 261436234 is about 639.4234994092.

The spelling of 261436234 in words is "two hundred sixty-one million, four hundred thirty-six thousand, two hundred thirty-four".