261412264 has 64 divisors (see below), whose sum is σ = 544320000. Its totient is φ = 117132288.

The previous prime is 261412259. The next prime is 261412309. The reversal of 261412264 is 462214162.

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, 311157 + ... + 311995.

It is an arithmetic number, because the mean of its divisors is an integer number (8505000).

Almost surely, 2^261412264 is an apocalyptic number.

It is an amenable number.

261412264 is an abundant number, since it is smaller than the sum of its proper divisors (282907736).

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

261412264 is a wasteful number, since it uses less digits than its factorization.

261412264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 970 (or 966 counting only the distinct ones).

The product of its digits is 4608, while the sum is 28.

The square root of 261412264 is about 16168.2486373757. The cubic root of 261412264 is about 639.4039567856.

It can be divided in two parts, 2614 and 12264, that added together give a triangular number (14878 = T₁₇₂).

The spelling of 261412264 in words is "two hundred sixty-one million, four hundred twelve thousand, two hundred sixty-four".