26387642 has 4 divisors (see below), whose sum is σ = 39581466. Its totient is φ = 13193820.

The previous prime is 26387639. The next prime is 26387653. The reversal of 26387642 is 24678362.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 22743361 + 3644281 = 4769^2 + 1909^2 .

It is a junction number, because it is equal to n+sod(n) for n = 26387596 and 26387605.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6596909 + ... + 6596912.

Almost surely, 2^26387642 is an apocalyptic number.

26387642 is a deficient number, since it is larger than the sum of its proper divisors (13193824).

26387642 is a wasteful number, since it uses less digits than its factorization.

26387642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13193823.

The product of its digits is 96768, while the sum is 38.

The square root of 26387642 is about 5136.8903044546. The cubic root of 26387642 is about 297.7146420791.

The spelling of 26387642 in words is "twenty-six million, three hundred eighty-seven thousand, six hundred forty-two".