7138488 has 32 divisors (see below), whose sum is σ = 20396160. Its totient is φ = 2039520.

The previous prime is 7138409. The next prime is 7138489. The reversal of 7138488 is 8848317.

It is a super-2 number, since 2×7138488² = 101916021852288, which contains 22 as substring.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138489) 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, 21078 + ... + 21413.

It is an arithmetic number, because the mean of its divisors is an integer number (637380).

Almost surely, 2^7138488 is an apocalyptic number.

It is an amenable number.

7138488 is an abundant number, since it is smaller than the sum of its proper divisors (13257672).

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

7138488 is a wasteful number, since it uses less digits than its factorization.

7138488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42507 (or 42503 counting only the distinct ones).

The product of its digits is 43008, while the sum is 39.

The square root of 7138488 is about 2671.7949023082. The cubic root of 7138488 is about 192.5464036105.

It can be divided in two parts, 7138 and 488, that added together give a triangular number (7626 = T₁₂₃).

The spelling of 7138488 in words is "seven million, one hundred thirty-eight thousand, four hundred eighty-eight".