7152138 has 120 divisors (see below), whose sum is σ = 20111652. Its totient is φ = 1886976.

The previous prime is 7152097. The next prime is 7152139. The reversal of 7152138 is 8312517.

It can be written as a sum of positive squares in 2 ways, for example, as 6671889 + 480249 = 2583^2 + 693^2 .

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 (7152139) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 134920 + ... + 134972.

Almost surely, 2^7152138 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7152138, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10055826).

7152138 is an abundant number, since it is smaller than the sum of its proper divisors (12959514).

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

7152138 is a wasteful number, since it uses less digits than its factorization.

7152138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98 (or 82 counting only the distinct ones).

The product of its digits is 1680, while the sum is 27.

The square root of 7152138 is about 2674.3481448757. The cubic root of 7152138 is about 192.6690525973.

The spelling of 7152138 in words is "seven million, one hundred fifty-two thousand, one hundred thirty-eight".