26888769 has 12 divisors (see below), whose sum is σ = 39276900. Its totient is φ = 17723904.

The previous prime is 26888767. The next prime is 26888773. The reversal of 26888769 is 96788862.

It can be written as a sum of positive squares in 2 ways, for example, as 3240000 + 23648769 = 1800^2 + 4863^2 .

It is not a de Polignac number, because 26888769 - 2¹ = 26888767 is a prime.

It is a super-2 number, since 2×26888769² = 1446011796670722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26888761) 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, 15984 + ... + 17585.

It is an arithmetic number, because the mean of its divisors is an integer number (3273075).

Almost surely, 2^26888769 is an apocalyptic number.

It is an amenable number.

26888769 is a deficient number, since it is larger than the sum of its proper divisors (12388131).

26888769 is a wasteful number, since it uses less digits than its factorization.

26888769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33664 (or 33661 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 26888769 is about 5185.4381685640. The cubic root of 26888769 is about 299.5874663132.

The spelling of 26888769 in words is "twenty-six million, eight hundred eighty-eight thousand, seven hundred sixty-nine".