261410244 has 24 divisors (see below), whose sum is σ = 624143520. Its totient is φ = 85110144.

The previous prime is 261410209. The next prime is 261410269. The reversal of 261410244 is 442014162.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 252789 + ... + 253820.

It is an arithmetic number, because the mean of its divisors is an integer number (26005980).

Almost surely, 2^261410244 is an apocalyptic number.

It is an amenable number.

261410244 is an abundant number, since it is smaller than the sum of its proper divisors (362733276).

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

261410244 is a wasteful number, since it uses less digits than its factorization.

261410244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506659 (or 506657 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 261410244 is about 16168.1861691409. The cubic root of 261410244 is about 639.4023098349.

The spelling of 261410244 in words is "two hundred sixty-one million, four hundred ten thousand, two hundred forty-four".