261122468 has 24 divisors (see below), whose sum is σ = 470500800. Its totient is φ = 126711648.

The previous prime is 261122447. The next prime is 261122483. The reversal of 261122468 is 864221162.

It is a super-2 number, since 2×261122468² = 136369886588822048, which contains 22 as substring.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 62963 + ... + 66981.

It is an arithmetic number, because the mean of its divisors is an integer number (19604200).

Almost surely, 2^261122468 is an apocalyptic number.

It is an amenable number.

261122468 is a deficient number, since it is larger than the sum of its proper divisors (209378332).

261122468 is a wasteful number, since it uses less digits than its factorization.

261122468 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4499 (or 4497 counting only the distinct ones).

The product of its digits is 9216, while the sum is 32.

The square root of 261122468 is about 16159.2842663281. The cubic root of 261122468 is about 639.1675929410.

The spelling of 261122468 in words is "two hundred sixty-one million, one hundred twenty-two thousand, four hundred sixty-eight".