26689264 has 40 divisors (see below), whose sum is σ = 61011968. Its totient is φ = 11067840.

The previous prime is 26689261. The next prime is 26689277. The reversal of 26689264 is 46298662.

It is a self number, because there is not a number n which added to its sum of digits gives 26689264.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26689261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 372 + ... + 7315.

Almost surely, 2^26689264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 26689264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30505984).

26689264 is an abundant number, since it is smaller than the sum of its proper divisors (34322704).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26689264 is a wasteful number, since it uses less digits than its factorization.

26689264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7733 (or 7727 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 26689264 is about 5166.1653090082. The cubic root of 26689264 is about 298.8446824418.

The spelling of 26689264 in words is "twenty-six million, six hundred eighty-nine thousand, two hundred sixty-four".