8972226 has 48 divisors (see below), whose sum is σ = 20849400. Its totient is φ = 2778624.

The previous prime is 8972221. The next prime is 8972261. The reversal of 8972226 is 6222798.

It can be written as a sum of positive squares in 4 ways, for example, as 7568001 + 1404225 = 2751^2 + 1185^2 .

It is a d-powerful number, because it can be written as 8 + 9⁵ + 7² + 2³ + 2¹⁹ + 2²³ + 6³ .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8972221) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 33220 + ... + 33488.

Almost surely, 2^8972226 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8972226, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10424700).

8972226 is an abundant number, since it is smaller than the sum of its proper divisors (11877174).

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

8972226 is a wasteful number, since it uses less digits than its factorization.

8972226 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 403 (or 400 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 8972226 is about 2995.3674232054. The cubic root of 8972226 is about 207.7941905327.

The spelling of 8972226 in words is "eight million, nine hundred seventy-two thousand, two hundred twenty-six".