261748882 has 8 divisors (see below), whose sum is σ = 392717196. Its totient is φ = 130843152.

The previous prime is 261748859. The next prime is 261748889. The reversal of 261748882 is 288847162.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 256032001 + 5716881 = 16001^2 + 2391^2 .

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

It is not an unprimeable number, because it can be changed into a prime (261748889) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3213 + ... + 23104.

Almost surely, 2^261748882 is an apocalyptic number.

261748882 is a deficient number, since it is larger than the sum of its proper divisors (130968314).

261748882 is a wasteful number, since it uses less digits than its factorization.

261748882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31292.

The product of its digits is 344064, while the sum is 46.

The square root of 261748882 is about 16178.6551357027. The cubic root of 261748882 is about 639.6782904614.

The spelling of 261748882 in words is "two hundred sixty-one million, seven hundred forty-eight thousand, eight hundred eighty-two".