138273152 has 16 divisors (see below), whose sum is σ = 275466300. Its totient is φ = 69136512.

The previous prime is 138273041. The next prime is 138273173. The reversal of 138273152 is 251372831.

It is a tau number, because it is divible by the number of its divisors (16).

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 540002 + ... + 540257.

Almost surely, 2^138273152 is an apocalyptic number.

It is an amenable number.

138273152 is a deficient number, since it is larger than the sum of its proper divisors (137193148).

138273152 is an equidigital number, since it uses as much as digits as its factorization.

138273152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1080273 (or 1080261 counting only the distinct ones).

The product of its digits is 10080, while the sum is 32.

The square root of 138273152 is about 11758.9604982753. The cubic root of 138273152 is about 517.1056555325.

The spelling of 138273152 in words is "one hundred thirty-eight million, two hundred seventy-three thousand, one hundred fifty-two".