138533352 has 32 divisors (see below), whose sum is σ = 349702080. Its totient is φ = 45728640.

The previous prime is 138533309. The next prime is 138533359. The reversal of 138533352 is 253335831.

It is not an unprimeable number, because it can be changed into a prime (138533359) 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, 25549 + ... + 30492.

It is an arithmetic number, because the mean of its divisors is an integer number (10928190).

Almost surely, 2^138533352 is an apocalyptic number.

138533352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138533352 is an abundant number, since it is smaller than the sum of its proper divisors (211168728).

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

138533352 is a wasteful number, since it uses less digits than its factorization.

138533352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56153 (or 56149 counting only the distinct ones).

The product of its digits is 32400, while the sum is 33.

The square root of 138533352 is about 11770.0192013437. The cubic root of 138533352 is about 517.4298124138.

It can be divided in two parts, 13853 and 3352, that added together give a triangular number (17205 = T₁₈₅).

The spelling of 138533352 in words is "one hundred thirty-eight million, five hundred thirty-three thousand, three hundred fifty-two".