26721022 has 4 divisors (see below), whose sum is σ = 40081536. Its totient is φ = 13360510.

The previous prime is 26720959. The next prime is 26721029. The reversal of 26721022 is 22012762.

It is a semiprime because it is the product of two primes.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 26720984 and 26721002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26721029) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6680254 + ... + 6680257.

It is an arithmetic number, because the mean of its divisors is an integer number (10020384).

Almost surely, 2^26721022 is an apocalyptic number.

26721022 is a deficient number, since it is larger than the sum of its proper divisors (13360514).

26721022 is a wasteful number, since it uses less digits than its factorization.

26721022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13360513.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 26721022 is about 5169.2380483007. The cubic root of 26721022 is about 298.9631688804.

Adding to 26721022 its reverse (22012762), we get a palindrome (48733784).

The spelling of 26721022 in words is "twenty-six million, seven hundred twenty-one thousand, twenty-two".