26489138 has 8 divisors (see below), whose sum is σ = 42790188. Its totient is φ = 12225744.

The previous prime is 26489137. The next prime is 26489149. The reversal of 26489138 is 83198462.

It can be written as a sum of positive squares in 2 ways, for example, as 24631369 + 1857769 = 4963^2 + 1363^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 26489095 and 26489104.

It is not an unprimeable number, because it can be changed into a prime (26489131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 509381 + ... + 509432.

Almost surely, 2^26489138 is an apocalyptic number.

26489138 is a deficient number, since it is larger than the sum of its proper divisors (16301050).

26489138 is a wasteful number, since it uses less digits than its factorization.

26489138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1018828.

The product of its digits is 82944, while the sum is 41.

The square root of 26489138 is about 5146.7599516589. The cubic root of 26489138 is about 298.0958582359.

The spelling of 26489138 in words is "twenty-six million, four hundred eighty-nine thousand, one hundred thirty-eight".