26863481 has 2 divisors, whose sum is σ = 26863482. Its totient is φ = 26863480.

The previous prime is 26863457. The next prime is 26863513. The reversal of 26863481 is 18436862.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14891881 + 11971600 = 3859^2 + 3460^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-26863481 is a prime.

It is a super-2 number, since 2×26863481² = 1443293222874722, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (26863411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13431740 + 13431741.

It is an arithmetic number, because the mean of its divisors is an integer number (13431741).

Almost surely, 2^26863481 is an apocalyptic number.

It is an amenable number.

26863481 is a deficient number, since it is larger than the sum of its proper divisors (1).

26863481 is an equidigital number, since it uses as much as digits as its factorization.

26863481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55296, while the sum is 38.

The square root of 26863481 is about 5182.9992282461. Note that the first 3 decimals coincide. The cubic root of 26863481 is about 299.4935194802.

The spelling of 26863481 in words is "twenty-six million, eight hundred sixty-three thousand, four hundred eighty-one".