261107264 has 28 divisors (see below), whose sum is σ = 565239408. Its totient is φ = 118684800.

The previous prime is 261107251. The next prime is 261107269. The reversal of 261107264 is 462701162.

It is not an unprimeable number, because it can be changed into a prime (261107269) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 184742 + ... + 186149.

Almost surely, 2^261107264 is an apocalyptic number.

It is an amenable number.

261107264 is an abundant number, since it is smaller than the sum of its proper divisors (304132144).

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

261107264 is a wasteful number, since it uses less digits than its factorization.

261107264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 370914 (or 370904 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 261107264 is about 16158.8138178519. The cubic root of 261107264 is about 639.1551874048.

The spelling of 261107264 in words is "two hundred sixty-one million, one hundred seven thousand, two hundred sixty-four".