7322138 has 16 divisors (see below), whose sum is σ = 12006144. Its totient is φ = 3334080.

The previous prime is 7322137. The next prime is 7322153. The reversal of 7322138 is 8312237.

It is a super-2 number, since 2×7322138² = 107227409782088, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (7322131) 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, 2420 + ... + 4527.

It is an arithmetic number, because the mean of its divisors is an integer number (750384).

Almost surely, 2^7322138 is an apocalyptic number.

7322138 is a deficient number, since it is larger than the sum of its proper divisors (4684006).

7322138 is a wasteful number, since it uses less digits than its factorization.

7322138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6997.

The product of its digits is 2016, while the sum is 26.

The square root of 7322138 is about 2705.9449366164. The cubic root of 7322138 is about 194.1836394831.

Subtracting 7322138 from its reverse (8312237), we obtain a palindrome (990099).

The spelling of 7322138 in words is "seven million, three hundred twenty-two thousand, one hundred thirty-eight".