26563842 has 16 divisors (see below), whose sum is σ = 59030880. Its totient is φ = 8854596.

The previous prime is 26563841. The next prime is 26563847. The reversal of 26563842 is 24836562.

It is a super-3 number, since 3×26563842³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 26563797 and 26563806.

It is not an unprimeable number, because it can be changed into a prime (26563841) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 245908 + ... + 246015.

It is an arithmetic number, because the mean of its divisors is an integer number (3689430).

Almost surely, 2^26563842 is an apocalyptic number.

26563842 is an abundant number, since it is smaller than the sum of its proper divisors (32467038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26563842 is a wasteful number, since it uses less digits than its factorization.

26563842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 491934 (or 491928 counting only the distinct ones).

The product of its digits is 69120, while the sum is 36.

The square root of 26563842 is about 5154.0122235012. The cubic root of 26563842 is about 298.3758226955.

It can be divided in two parts, 2 and 6563842, that added together give a square (6563844 = 2562²).

The spelling of 26563842 in words is "twenty-six million, five hundred sixty-three thousand, eight hundred forty-two".