26215222 has 8 divisors (see below), whose sum is σ = 42897672. Its totient is φ = 11916000.

The previous prime is 26215219. The next prime is 26215229. The reversal of 26215222 is 22251262.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (22), and also a Moran number because the ratio is a prime number: 1191601 = 26215222 / (2 + 6 + 2 + 1 + 5 + 2 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 26215193 and 26215202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (26215229) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 595779 + ... + 595822.

It is an arithmetic number, because the mean of its divisors is an integer number (5362209).

Almost surely, 2^26215222 is an apocalyptic number.

26215222 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

26215222 is a deficient number, since it is larger than the sum of its proper divisors (16682450).

26215222 is a wasteful number, since it uses less digits than its factorization.

26215222 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1191614.

The product of its digits is 960, while the sum is 22.

The square root of 26215222 is about 5120.0802728082. The cubic root of 26215222 is about 297.0647902879.

Adding to 26215222 its reverse (22251262), we get a palindrome (48466484).

The spelling of 26215222 in words is "twenty-six million, two hundred fifteen thousand, two hundred twenty-two".