138753344 has 14 divisors (see below), whose sum is σ = 275338794. Its totient is φ = 69376640.

The previous prime is 138753343. The next prime is 138753361. The reversal of 138753344 is 443357831.

It can be written as a sum of positive squares in only one way, i.e., 93702400 + 45050944 = 9680^2 + 6712^2 .

It is a junction number, because it is equal to n+sod(n) for n = 138753298 and 138753307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138753343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083947 + ... + 1084074.

Almost surely, 2^138753344 is an apocalyptic number.

It is an amenable number.

138753344 is a deficient number, since it is larger than the sum of its proper divisors (136585450).

138753344 is an equidigital number, since it uses as much as digits as its factorization.

138753344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2168033 (or 2168023 counting only the distinct ones).

The product of its digits is 120960, while the sum is 38.

The square root of 138753344 is about 11779.3609334293. The cubic root of 138753344 is about 517.7035616981.

The spelling of 138753344 in words is "one hundred thirty-eight million, seven hundred fifty-three thousand, three hundred forty-four".