138703272 has 32 divisors (see below), whose sum is σ = 367156800. Its totient is φ = 43514624.

The previous prime is 138703267. The next prime is 138703273. The reversal of 138703272 is 272307831.

It is a super-3 number, since 3×138703272³ (a number of 25 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (138703273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 169572 + ... + 170387.

It is an arithmetic number, because the mean of its divisors is an integer number (11473650).

Almost surely, 2^138703272 is an apocalyptic number.

138703272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138703272 is an abundant number, since it is smaller than the sum of its proper divisors (228453528).

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

138703272 is a wasteful number, since it uses less digits than its factorization.

138703272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339985 (or 339981 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 33.

The square root of 138703272 is about 11777.2353292273. The cubic root of 138703272 is about 517.6412795437.

The spelling of 138703272 in words is "one hundred thirty-eight million, seven hundred three thousand, two hundred seventy-two".