26142769 has 3 divisors (see below), whose sum is σ = 26147883. Its totient is φ = 26137656.

The previous prime is 26142737. The next prime is 26142773. The reversal of 26142769 is 96724162.

The square root of 26142769 is 5113.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 255025 + 25887744 = 505^2 + 5088^2 .

It is not a de Polignac number, because 26142769 - 2⁵ = 26142737 is a prime.

It is a super-2 number, since 2×26142769² = 1366888741974722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (26142469) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 2557 + ... + 7669.

It is an arithmetic number, because the mean of its divisors is an integer number (8715961).

Almost surely, 2^26142769 is an apocalyptic number.

26142769 is the 5113-rd square number.

26142769 is the 2557-th centered octagonal number.

It is an amenable number.

26142769 is a deficient number, since it is larger than the sum of its proper divisors (5114).

26142769 is an frugal number, since it uses more digits than its factorization.

26142769 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10226 (or 5113 counting only the distinct ones).

The product of its digits is 36288, while the sum is 37.

The cubic root of 26142769 is about 296.7908642686.

The spelling of 26142769 in words is "twenty-six million, one hundred forty-two thousand, seven hundred sixty-nine".