27422226 has 80 divisors (see below), whose sum is σ = 68607000. Its totient is φ = 8128512.

The previous prime is 27422209. The next prime is 27422237. The reversal of 27422226 is 62222472.

It can be written as a sum of positive squares in 4 ways, for example, as 20657025 + 6765201 = 4545^2 + 2601^2 .

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 27422226.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 60850 + ... + 61298.

Almost surely, 2^27422226 is an apocalyptic number.

27422226 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 27422226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34303500).

27422226 is an abundant number, since it is smaller than the sum of its proper divisors (41184774).

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

27422226 is a wasteful number, since it uses less digits than its factorization.

27422226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 505 (or 496 counting only the distinct ones).

The product of its digits is 5376, while the sum is 27.

The square root of 27422226 is about 5236.6235304822. The cubic root of 27422226 is about 301.5557185209. Note that the first 3 decimals are identical.

Adding to 27422226 its reverse (62222472), we get a palindrome (89644698).

It can be divided in two parts, 274 and 22226, that added together give a square (22500 = 150²).

The spelling of 27422226 in words is "twenty-seven million, four hundred twenty-two thousand, two hundred twenty-six".