261798592 has 28 divisors (see below), whose sum is σ = 566735976. Its totient is φ = 118999040.

The previous prime is 261798557. The next prime is 261798611. The reversal of 261798592 is 295897162.

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, 185233 + ... + 186640.

Almost surely, 2^261798592 is an apocalyptic number.

261798592 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

261798592 is an abundant number, since it is smaller than the sum of its proper divisors (304937384).

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

261798592 is a wasteful number, since it uses less digits than its factorization.

261798592 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371896 (or 371886 counting only the distinct ones).

The product of its digits is 544320, while the sum is 49.

The square root of 261798592 is about 16180.1913462110. The cubic root of 261798592 is about 639.7187827006.

The spelling of 261798592 in words is "two hundred sixty-one million, seven hundred ninety-eight thousand, five hundred ninety-two".