261670192 has 60 divisors (see below), whose sum is σ = 599861160. Its totient is φ = 110224128.

The previous prime is 261670183. The next prime is 261670237. The reversal of 261670192 is 291076162.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 43428 + ... + 49084.

It is an arithmetic number, because the mean of its divisors is an integer number (9997686).

Almost surely, 2^261670192 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 261670192, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299930580).

261670192 is an abundant number, since it is smaller than the sum of its proper divisors (338190968).

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

261670192 is a wasteful number, since it uses less digits than its factorization.

261670192 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5738 (or 5725 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 261670192 is about 16176.2230449509. The cubic root of 261670192 is about 639.6141815219.

The spelling of 261670192 in words is "two hundred sixty-one million, six hundred seventy thousand, one hundred ninety-two".