261849102 has 32 divisors (see below), whose sum is σ = 543257088. Its totient is φ = 84079296.

The previous prime is 261849073. The next prime is 261849109. The reversal of 261849102 is 201948162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261849109) 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 15 ways as a sum of consecutive naturals, for example, 11883 + ... + 25785.

It is an arithmetic number, because the mean of its divisors is an integer number (16976784).

Almost surely, 2^261849102 is an apocalyptic number.

261849102 is an abundant number, since it is smaller than the sum of its proper divisors (281407986).

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

261849102 is a wasteful number, since it uses less digits than its factorization.

261849102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14024.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 261849102 is about 16181.7521301001. The cubic root of 261849102 is about 639.7599213455.

The spelling of 261849102 in words is "two hundred sixty-one million, eight hundred forty-nine thousand, one hundred two".