26218222 has 4 divisors (see below), whose sum is σ = 39327336. Its totient is φ = 13109110.

The previous prime is 26218187. The next prime is 26218223. The reversal of 26218222 is 22281262.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26218223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6554554 + ... + 6554557.

It is an arithmetic number, because the mean of its divisors is an integer number (9831834).

Almost surely, 2^26218222 is an apocalyptic number.

26218222 is a deficient number, since it is larger than the sum of its proper divisors (13109114).

26218222 is a wasteful number, since it uses less digits than its factorization.

26218222 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13109113.

The product of its digits is 1536, while the sum is 25.

The square root of 26218222 is about 5120.3732285840. The cubic root of 26218222 is about 297.0761216227.

Adding to 26218222 its reverse (22281262), we get a palindrome (48499484).

The spelling of 26218222 in words is "twenty-six million, two hundred eighteen thousand, two hundred twenty-two".