261302264 has 16 divisors (see below), whose sum is σ = 511243920. Its totient is φ = 124970560.

The previous prime is 261302263. The next prime is 261302297. The reversal of 261302264 is 462203162.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261302263) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 709877 + ... + 710244.

It is an arithmetic number, because the mean of its divisors is an integer number (31952745).

Almost surely, 2^261302264 is an apocalyptic number.

It is an amenable number.

261302264 is a deficient number, since it is larger than the sum of its proper divisors (249941656).

261302264 is a wasteful number, since it uses less digits than its factorization.

261302264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1420150 (or 1420146 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 261302264 is about 16164.8465504625. The cubic root of 261302264 is about 639.3142590009.

The spelling of 261302264 in words is "two hundred sixty-one million, three hundred two thousand, two hundred sixty-four".