261122982 has 16 divisors (see below), whose sum is σ = 539092992. Its totient is φ = 84233160.

The previous prime is 261122977. The next prime is 261122987. The reversal of 261122982 is 289221162.

It is an interprime number because it is at equal distance from previous prime (261122977) and next prime (261122987).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261122987) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 701758 + ... + 702129.

It is an arithmetic number, because the mean of its divisors is an integer number (33693312).

Almost surely, 2^261122982 is an apocalyptic number.

261122982 is an abundant number, since it is smaller than the sum of its proper divisors (277970010).

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

261122982 is a wasteful number, since it uses less digits than its factorization.

261122982 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403923.

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

The square root of 261122982 is about 16159.3001704901. The cubic root of 261122982 is about 639.1680123252.

The spelling of 261122982 in words is "two hundred sixty-one million, one hundred twenty-two thousand, nine hundred eighty-two".