138283452 has 36 divisors (see below), whose sum is σ = 364749840. Its totient is φ = 44090112.

The previous prime is 138283451. The next prime is 138283471. The reversal of 138283452 is 254382831.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138283451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 82677 + ... + 84332.

It is an arithmetic number, because the mean of its divisors is an integer number (10131940).

Almost surely, 2^138283452 is an apocalyptic number.

138283452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138283452 is an abundant number, since it is smaller than the sum of its proper divisors (226466388).

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

138283452 is a wasteful number, since it uses less digits than its factorization.

138283452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 167042 (or 167037 counting only the distinct ones).

The product of its digits is 46080, while the sum is 36.

The square root of 138283452 is about 11759.3984540027. The cubic root of 138283452 is about 517.1184949881.

The spelling of 138283452 in words is "one hundred thirty-eight million, two hundred eighty-three thousand, four hundred fifty-two".