22274406 has 96 divisors (see below), whose sum is σ = 62307840. Its totient is φ = 5773680.

The previous prime is 22274383. The next prime is 22274423. The reversal of 22274406 is 60447222.

It is a happy number.

It is a super-2 number, since 2×22274406² = 992298325305672, which contains 22 as substring.

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 22274406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 45495 + ... + 45981.

It is an arithmetic number, because the mean of its divisors is an integer number (649040).

Almost surely, 2^22274406 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 22274406, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (31153920).

22274406 is an abundant number, since it is smaller than the sum of its proper divisors (40033434).

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

22274406 is a wasteful number, since it uses less digits than its factorization.

22274406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 527 (or 510 counting only the distinct ones).

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

The square root of 22274406 is about 4719.5768878153. The cubic root of 22274406 is about 281.3641172462.

The spelling of 22274406 in words is "twenty-two million, two hundred seventy-four thousand, four hundred six".