26231481 has 12 divisors (see below), whose sum is σ = 38226708. Its totient is φ = 17332224.

The previous prime is 26231461. The next prime is 26231489. The reversal of 26231481 is 18413262.

It can be written as a sum of positive squares in 2 ways, for example, as 1071225 + 25160256 = 1035^2 + 5016^2 .

It is not a de Polignac number, because 26231481 - 2¹⁴ = 26215097 is a prime.

It is a super-2 number, since 2×26231481² = 1376181190906722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26231489) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11880 + ... + 13913.

It is an arithmetic number, because the mean of its divisors is an integer number (3185559).

Almost surely, 2^26231481 is an apocalyptic number.

It is an amenable number.

26231481 is a deficient number, since it is larger than the sum of its proper divisors (11995227).

26231481 is a wasteful number, since it uses less digits than its factorization.

26231481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25912 (or 25909 counting only the distinct ones).

The product of its digits is 2304, while the sum is 27.

The square root of 26231481 is about 5121.6677947715. The cubic root of 26231481 is about 297.1261919960.

The spelling of 26231481 in words is "twenty-six million, two hundred thirty-one thousand, four hundred eighty-one".