138610032 has 40 divisors (see below), whose sum is σ = 390629760. Its totient is φ = 42002880.

The previous prime is 138610019. The next prime is 138610033. The reversal of 138610032 is 230016831.

138610032 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 138609984 and 138610011.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138610033) 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, 130732 + ... + 131787.

It is an arithmetic number, because the mean of its divisors is an integer number (9765744).

Almost surely, 2^138610032 is an apocalyptic number.

138610032 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138610032 is an abundant number, since it is smaller than the sum of its proper divisors (252019728).

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

138610032 is a wasteful number, since it uses less digits than its factorization.

138610032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262541 (or 262535 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 138610032 is about 11773.2761795517. The cubic root of 138610032 is about 517.5252628336.

Adding to 138610032 its reverse (230016831), we get a palindrome (368626863).

The spelling of 138610032 in words is "one hundred thirty-eight million, six hundred ten thousand, thirty-two".