261124260 has 48 divisors (see below), whose sum is σ = 731867136. Its totient is φ = 69564672.

The previous prime is 261124247. The next prime is 261124271. The reversal of 261124260 is 62421162.

It is a self number, because there is not a number n which added to its sum of digits gives 261124260.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 98472 + ... + 101088.

It is an arithmetic number, because the mean of its divisors is an integer number (15247232).

Almost surely, 2^261124260 is an apocalyptic number.

261124260 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

261124260 is an abundant number, since it is smaller than the sum of its proper divisors (470742876).

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

261124260 is a wasteful number, since it uses less digits than its factorization.

261124260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4292 (or 4290 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 24.

The square root of 261124260 is about 16159.3397142334. The cubic root of 261124260 is about 639.1690550719.

The spelling of 261124260 in words is "two hundred sixty-one million, one hundred twenty-four thousand, two hundred sixty".