6972228 has 36 divisors (see below), whose sum is σ = 17711148. Its totient is φ = 2312640.

The previous prime is 6972127. The next prime is 6972233. The reversal of 6972228 is 8222796.

6972228 is digitally balanced in base 5, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 6140484 + 831744 = 2478^2 + 912^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a super-2 number, since 2×6972228² = 97223926567968, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 6972192 and 6972201.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10218 + ... + 10878.

Almost surely, 2^6972228 is an apocalyptic number.

It is an amenable number.

6972228 is an abundant number, since it is smaller than the sum of its proper divisors (10738920).

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

6972228 is a wasteful number, since it uses less digits than its factorization.

6972228 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 964 (or 959 counting only the distinct ones).

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

The square root of 6972228 is about 2640.4976803625. The cubic root of 6972228 is about 191.0398023827.

The spelling of 6972228 in words is "six million, nine hundred seventy-two thousand, two hundred twenty-eight".