26221982 has 4 divisors (see below), whose sum is σ = 39332976. Its totient is φ = 13110990.

The previous prime is 26221969. The next prime is 26221997. The reversal of 26221982 is 28912262.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6555494 + ... + 6555497.

It is an arithmetic number, because the mean of its divisors is an integer number (9833244).

Almost surely, 2^26221982 is an apocalyptic number.

26221982 is a deficient number, since it is larger than the sum of its proper divisors (13110994).

26221982 is a wasteful number, since it uses less digits than its factorization.

26221982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13110993.

The product of its digits is 6912, while the sum is 32.

The square root of 26221982 is about 5120.7403761566. The cubic root of 26221982 is about 297.0903223419.

The spelling of 26221982 in words is "twenty-six million, two hundred twenty-one thousand, nine hundred eighty-two".