261824196 has 24 divisors (see below), whose sum is σ = 625824864. Its totient is φ = 85145920.

The previous prime is 261824159. The next prime is 261824231. The reversal of 261824196 is 691428162.

It is a super-2 number, since 2×261824196² = 137103819222092832, which contains 22 as substring.

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, 265590 + ... + 266573.

It is an arithmetic number, because the mean of its divisors is an integer number (26076036).

Almost surely, 2^261824196 is an apocalyptic number.

It is an amenable number.

261824196 is an abundant number, since it is smaller than the sum of its proper divisors (364000668).

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

261824196 is a wasteful number, since it uses less digits than its factorization.

261824196 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532211 (or 532209 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 261824196 is about 16180.9825412427. The cubic root of 261824196 is about 639.7396369327.

The spelling of 261824196 in words is "two hundred sixty-one million, eight hundred twenty-four thousand, one hundred ninety-six".