261268026 has 32 divisors (see below), whose sum is σ = 539068608. Its totient is φ = 84355200.

The previous prime is 261268013. The next prime is 261268027. The reversal of 261268026 is 620862162.

261268026 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (261268027) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49201 + ... + 54251.

It is an arithmetic number, because the mean of its divisors is an integer number (16845894).

Almost surely, 2^261268026 is an apocalyptic number.

261268026 is an abundant number, since it is smaller than the sum of its proper divisors (277800582).

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

261268026 is a wasteful number, since it uses less digits than its factorization.

261268026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5326.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 261268026 is about 16163.7874893232. The cubic root of 261268026 is about 639.2863350207.

The spelling of 261268026 in words is "two hundred sixty-one million, two hundred sixty-eight thousand, twenty-six".