26287261 has 16 divisors (see below), whose sum is σ = 35296128. Its totient is φ = 18907200.

The previous prime is 26287259. The next prime is 26287267. The reversal of 26287261 is 16278262.

It is not a de Polignac number, because 26287261 - 2¹ = 26287259 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26287267) 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, 12130 + ... + 14131.

It is an arithmetic number, because the mean of its divisors is an integer number (2206008).

Almost surely, 2^26287261 is an apocalyptic number.

It is an amenable number.

26287261 is a deficient number, since it is larger than the sum of its proper divisors (9008867).

26287261 is a wasteful number, since it uses less digits than its factorization.

26287261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26292.

The product of its digits is 16128, while the sum is 34.

The square root of 26287261 is about 5127.1103947545. The cubic root of 26287261 is about 297.3366511401.

It can be divided in two parts, 2628 and 7261, that added together give a palindrome (9889).

The spelling of 26287261 in words is "twenty-six million, two hundred eighty-seven thousand, two hundred sixty-one".