26169481 has 6 divisors (see below), whose sum is σ = 28337550. Its totient is φ = 24156288.

The previous prime is 26169431. The next prime is 26169491. The reversal of 26169481 is 18496162.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 2975625 + 23193856 = 1725^2 + 4816^2 .

It is not a de Polignac number, because 26169481 - 2⁹ = 26168969 is a prime.

It is a super-2 number, since 2×26169481² = 1369683471618722, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 26169481.

It is not an unprimeable number, because it can be changed into a prime (26169431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 77256 + ... + 77593.

It is an arithmetic number, because the mean of its divisors is an integer number (4722925).

Almost surely, 2^26169481 is an apocalyptic number.

It is an amenable number.

26169481 is a deficient number, since it is larger than the sum of its proper divisors (2168069).

26169481 is a wasteful number, since it uses less digits than its factorization.

26169481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154875 (or 154862 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 26169481 is about 5115.6114981496. The cubic root of 26169481 is about 296.8919142496.

The spelling of 26169481 in words is "twenty-six million, one hundred sixty-nine thousand, four hundred eighty-one".