26281642 has 4 divisors (see below), whose sum is σ = 39422466. Its totient is φ = 13140820.

The previous prime is 26281639. The next prime is 26281681. The reversal of 26281642 is 24618262.

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., 13242321 + 13039321 = 3639^2 + 3611^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6570409 + ... + 6570412.

Almost surely, 2^26281642 is an apocalyptic number.

26281642 is a deficient number, since it is larger than the sum of its proper divisors (13140824).

26281642 is a wasteful number, since it uses less digits than its factorization.

26281642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13140823.

The product of its digits is 9216, while the sum is 31.

The square root of 26281642 is about 5126.5623959921. The cubic root of 26281642 is about 297.3154640247.

The spelling of 26281642 in words is "twenty-six million, two hundred eighty-one thousand, six hundred forty-two".