26506642 has 8 divisors (see below), whose sum is σ = 40153932. Its totient is φ = 13122000.

The previous prime is 26506639. The next prime is 26506651. The reversal of 26506642 is 24660562.

It can be written as a sum of positive squares in 2 ways, for example, as 17986081 + 8520561 = 4241^2 + 2919^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65409 + ... + 65812.

Almost surely, 2^26506642 is an apocalyptic number.

26506642 is a deficient number, since it is larger than the sum of its proper divisors (13647290).

26506642 is a wasteful number, since it uses less digits than its factorization.

26506642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131324.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 26506642 is about 5148.4601581444. The cubic root of 26506642 is about 298.1615042754.

The spelling of 26506642 in words is "twenty-six million, five hundred six thousand, six hundred forty-two".