7138272 has 24 divisors (see below), whose sum is σ = 18738216. Its totient is φ = 2379392.

The previous prime is 7138237. The next prime is 7138273. The reversal of 7138272 is 2728317.

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138273) 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 3 ways as a sum of consecutive naturals, for example, 37083 + ... + 37274.

It is an arithmetic number, because the mean of its divisors is an integer number (780759).

Almost surely, 2^7138272 is an apocalyptic number.

It is an amenable number.

7138272 is an abundant number, since it is smaller than the sum of its proper divisors (11599944).

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

7138272 is a wasteful number, since it uses less digits than its factorization.

7138272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74370 (or 74362 counting only the distinct ones).

The product of its digits is 4704, while the sum is 30.

The square root of 7138272 is about 2671.7544797380. The cubic root of 7138272 is about 192.5444615352.

The spelling of 7138272 in words is "seven million, one hundred thirty-eight thousand, two hundred seventy-two".