261492882 has 16 divisors (see below), whose sum is σ = 597698112. Its totient is φ = 74712240.

The previous prime is 261492863. The next prime is 261492883. The reversal of 261492882 is 288294162.

It is a Harshad number since it is a multiple of its sum of digits (42), and also a Moran number because the ratio is a prime number: 6226021 = 261492882 / (2 + 6 + 1 + 4 + 9 + 2 + 8 + 8 + 2).

It is not an unprimeable number, because it can be changed into a prime (261492883) 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, 3112969 + ... + 3113052.

It is an arithmetic number, because the mean of its divisors is an integer number (37356132).

Almost surely, 2^261492882 is an apocalyptic number.

261492882 is an abundant number, since it is smaller than the sum of its proper divisors (336205230).

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

261492882 is a wasteful number, since it uses less digits than its factorization.

261492882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6226033.

The product of its digits is 110592, while the sum is 42.

The square root of 261492882 is about 16170.7415414384. The cubic root of 261492882 is about 639.4696794992.

The spelling of 261492882 in words is "two hundred sixty-one million, four hundred ninety-two thousand, eight hundred eighty-two".