972228 has 12 divisors (see below), whose sum is σ = 2268560. Its totient is φ = 324072.

The previous prime is 972227. The next prime is 972229. The reversal of 972228 is 822279.

It is an interprime number because it is at equal distance from previous prime (972227) and next prime (972229).

It is a tau number, because it is divible by the number of its divisors (12).

It is a junction number, because it is equal to n+sod(n) for n = 972195 and 972204.

It is not an unprimeable number, because it can be changed into a prime (972221) 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 3 ways as a sum of consecutive naturals, for example, 40498 + ... + 40521.

2⁹⁷²²²⁸ is an apocalyptic number.

It is an amenable number.

972228 is an abundant number, since it is smaller than the sum of its proper divisors (1296332).

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

972228 is a wasteful number, since it uses less digits than its factorization.

972228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81026 (or 81024 counting only the distinct ones).

The product of its digits is 4032, while the sum is 30.

The square root of 972228 is about 986.0162270470. The cubic root of 972228 is about 99.0655621228.

The spelling of 972228 in words is "nine hundred seventy-two thousand, two hundred twenty-eight".