26821742 has 8 divisors (see below), whose sum is σ = 40294416. Its totient is φ = 13390272.

The previous prime is 26821709. The next prime is 26821757. The reversal of 26821742 is 24712862.

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 = 26821699 and 26821708.

It is a congruent number.

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, 8618 + ... + 11309.

It is an arithmetic number, because the mean of its divisors is an integer number (5036802).

Almost surely, 2^26821742 is an apocalyptic number.

26821742 is a deficient number, since it is larger than the sum of its proper divisors (13472674).

26821742 is a wasteful number, since it uses less digits than its factorization.

26821742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20602.

The product of its digits is 10752, while the sum is 32.

The square root of 26821742 is about 5178.9711333430. The cubic root of 26821742 is about 299.3383268871.

The spelling of 26821742 in words is "twenty-six million, eight hundred twenty-one thousand, seven hundred forty-two".