261271024 has 40 divisors (see below), whose sum is σ = 592649568. Its totient is φ = 109240320.

The previous prime is 261271009. The next prime is 261271027. The reversal of 261271024 is 420172162.

It is a self number, because there is not a number n which added to its sum of digits gives 261271024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (261271027) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23857 + ... + 33040.

Almost surely, 2^261271024 is an apocalyptic number.

It is an amenable number.

261271024 is an abundant number, since it is smaller than the sum of its proper divisors (331378544).

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

261271024 is a wasteful number, since it uses less digits than its factorization.

261271024 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56953 (or 56947 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 25.

The square root of 261271024 is about 16163.8802272227. The cubic root of 261271024 is about 639.2887802404.

The spelling of 261271024 in words is "two hundred sixty-one million, two hundred seventy-one thousand, twenty-four".