261048688 has 20 divisors (see below), whose sum is σ = 506250088. Its totient is φ = 130403520.

The previous prime is 261048679. The next prime is 261048701. The reversal of 261048688 is 886840162.

It is a congruent number.

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, 11770 + ... + 25702.

Almost surely, 2^261048688 is an apocalyptic number.

It is an amenable number.

261048688 is a deficient number, since it is larger than the sum of its proper divisors (245201400).

261048688 is a wasteful number, since it uses less digits than its factorization.

261048688 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15112 (or 15106 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The square root of 261048688 is about 16157.0012069072. The cubic root of 261048688 is about 639.1073884610.

The spelling of 261048688 in words is "two hundred sixty-one million, forty-eight thousand, six hundred eighty-eight".