7229138 has 16 divisors (see below), whose sum is σ = 12793344. Its totient is φ = 2998080.

The previous prime is 7229137. The next prime is 7229141. The reversal of 7229138 is 8319227.

It is a super-3 number, since 3×7229138³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7229137) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7895 + ... + 8762.

It is an arithmetic number, because the mean of its divisors is an integer number (799584).

Almost surely, 2^7229138 is an apocalyptic number.

7229138 is a deficient number, since it is larger than the sum of its proper divisors (5564206).

7229138 is a wasteful number, since it uses less digits than its factorization.

7229138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16697.

The product of its digits is 6048, while the sum is 32.

The square root of 7229138 is about 2688.7056365471. The cubic root of 7229138 is about 193.3580117791.

The spelling of 7229138 in words is "seven million, two hundred twenty-nine thousand, one hundred thirty-eight".