7228831 has 8 divisors (see below), whose sum is σ = 7657344. Its totient is φ = 6809880.

The previous prime is 7228817. The next prime is 7228853. The reversal of 7228831 is 1388227.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7228831 - 2⁷ = 7228703 is a prime.

It is a super-2 number, since 2×7228831² = 104511995253122, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 7228793 and 7228802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7228811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 805 + ... + 3886.

It is an arithmetic number, because the mean of its divisors is an integer number (957168).

Almost surely, 2^7228831 is an apocalyptic number.

7228831 is a deficient number, since it is larger than the sum of its proper divisors (428513).

7228831 is a wasteful number, since it uses less digits than its factorization.

7228831 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4781.

The product of its digits is 5376, while the sum is 31.

The square root of 7228831 is about 2688.6485452733. The cubic root of 7228831 is about 193.3552746270.

The spelling of 7228831 in words is "seven million, two hundred twenty-eight thousand, eight hundred thirty-one".