26305642 has 24 divisors (see below), whose sum is σ = 44011296. Its totient is φ = 11781000.

The previous prime is 26305627. The next prime is 26305651. The reversal of 26305642 is 24650362.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 26305642.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16417 + ... + 17947.

It is an arithmetic number, because the mean of its divisors is an integer number (1833804).

Almost surely, 2^26305642 is an apocalyptic number.

26305642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

26305642 is a deficient number, since it is larger than the sum of its proper divisors (17705654).

26305642 is a wasteful number, since it uses less digits than its factorization.

26305642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626 (or 1615 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 26305642 is about 5128.9026116705. The cubic root of 26305642 is about 297.4059378265.

The spelling of 26305642 in words is "twenty-six million, three hundred five thousand, six hundred forty-two".