261803104 has 12 divisors (see below), whose sum is σ = 515424924. Its totient is φ = 130901536.

The previous prime is 261803099. The next prime is 261803117. The reversal of 261803104 is 401308162.

261803104 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4090642 + ... + 4090705.

It is an arithmetic number, because the mean of its divisors is an integer number (42952077).

Almost surely, 2^261803104 is an apocalyptic number.

It is an amenable number.

261803104 is a deficient number, since it is larger than the sum of its proper divisors (253621820).

261803104 is an equidigital number, since it uses as much as digits as its factorization.

261803104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8181357 (or 8181349 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 261803104 is about 16180.3307753581. The cubic root of 261803104 is about 639.7224577835.

The spelling of 261803104 in words is "two hundred sixty-one million, eight hundred three thousand, one hundred four".