7138044 has 30 divisors (see below), whose sum is σ = 18661104. Its totient is φ = 2379240.

The previous prime is 7138039. The next prime is 7138049. The reversal of 7138044 is 4408317.

It is an interprime number because it is at equal distance from previous prime (7138039) and next prime (7138049).

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

It is a junction number, because it is equal to n+sod(n) for n = 7137999 and 7138017.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7138049) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 10692 + ... + 11339.

Almost surely, 2^7138044 is an apocalyptic number.

It is an amenable number.

7138044 is an abundant number, since it is smaller than the sum of its proper divisors (11523060).

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

7138044 is a wasteful number, since it uses less digits than its factorization.

7138044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22047 (or 22036 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 27.

The square root of 7138044 is about 2671.7118108059. The cubic root of 7138044 is about 192.5424115244.

The spelling of 7138044 in words is "seven million, one hundred thirty-eight thousand, forty-four".