26992081 has 2 divisors, whose sum is σ = 26992082. Its totient is φ = 26992080.

The previous prime is 26992079. The next prime is 26992099. The reversal of 26992081 is 18029962.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26010000 + 982081 = 5100^2 + 991^2 .

It is a cyclic number.

It is not a de Polignac number, because 26992081 - 2¹ = 26992079 is a prime.

It is a super-2 number, since 2×26992081² = 1457144873421122, which contains 22 as substring.

Together with 26992079, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 26992081.

It is not a weakly prime, because it can be changed into another prime (26992061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 13496040 + 13496041.

It is an arithmetic number, because the mean of its divisors is an integer number (13496041).

Almost surely, 2^26992081 is an apocalyptic number.

It is an amenable number.

26992081 is a deficient number, since it is larger than the sum of its proper divisors (1).

26992081 is an equidigital number, since it uses as much as digits as its factorization.

26992081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15552, while the sum is 37.

The square root of 26992081 is about 5195.3903606948. The cubic root of 26992081 is about 299.9706675025.

The spelling of 26992081 in words is "twenty-six million, nine hundred ninety-two thousand, eighty-one".