7233138 has 84 divisors (see below), whose sum is σ = 18316494. Its totient is φ = 2138400.

The previous prime is 7233103. The next prime is 7233139. The reversal of 7233138 is 8313327.

It can be written as a sum of positive squares in only one way, i.e., 7144929 + 88209 = 2673^2 + 297^2 .

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

It is not an unprimeable number, because it can be changed into a prime (7233139) by changing a digit.

It is a polite number, since it can be written in 41 ways as a sum of consecutive naturals, for example, 176398 + ... + 176438.

Almost surely, 2^7233138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7233138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9158247).

7233138 is an abundant number, since it is smaller than the sum of its proper divisors (11083356).

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

7233138 is a wasteful number, since it uses less digits than its factorization.

7233138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83 (or 57 counting only the distinct ones).

The product of its digits is 3024, while the sum is 27.

The square root of 7233138 is about 2689.4493860268. The cubic root of 7233138 is about 193.3936679177.

The spelling of 7233138 in words is "seven million, two hundred thirty-three thousand, one hundred thirty-eight".