261826050 has 48 divisors (see below), whose sum is σ = 650315520. Its totient is φ = 69714240.

The previous prime is 261826021. The next prime is 261826051. The reversal of 261826050 is 50628162.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 261825999 and 261826017.

It is not an unprimeable number, because it can be changed into a prime (261826051) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 181231 + ... + 182669.

It is an arithmetic number, because the mean of its divisors is an integer number (13548240).

Almost surely, 2^261826050 is an apocalyptic number.

261826050 is an abundant number, since it is smaller than the sum of its proper divisors (388489470).

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

261826050 is a wasteful number, since it uses less digits than its factorization.

261826050 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2667 (or 2662 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 261826050 is about 16181.0398306166. The cubic root of 261826050 is about 639.7411469466.

The spelling of 261826050 in words is "two hundred sixty-one million, eight hundred twenty-six thousand, fifty".