2228931 has 16 divisors (see below), whose sum is σ = 3409920. Its totient is φ = 1437480.

The previous prime is 2228927. The next prime is 2228939. The reversal of 2228931 is 1398222.

It is a happy number.

It is not a de Polignac number, because 2228931 - 2² = 2228927 is a prime.

It is a super-2 number, since 2×2228931² = 9936266805522, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a d-powerful number, because it can be written as 2⁵ + 2¹⁷ + 2²¹ + 8³ + 9² + 3⁴ + 1 .

It is a junction number, because it is equal to n+sod(n) for n = 2228895 and 2228904.

It is not an unprimeable number, because it can be changed into a prime (2228939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 495 + ... + 2168.

It is an arithmetic number, because the mean of its divisors is an integer number (213120).

2^2228931 is an apocalyptic number.

2228931 is a deficient number, since it is larger than the sum of its proper divisors (1180989).

2228931 is a wasteful number, since it uses less digits than its factorization.

2228931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2703 (or 2697 counting only the distinct ones).

The product of its digits is 1728, while the sum is 27.

The square root of 2228931 is about 1492.9604817275. The cubic root of 2228931 is about 130.6267759959.

The spelling of 2228931 in words is "two million, two hundred twenty-eight thousand, nine hundred thirty-one".