138608484 has 24 divisors (see below), whose sum is σ = 369622848. Its totient is φ = 39602400.

The previous prime is 138608467. The next prime is 138608489. The reversal of 138608484 is 484806831.

138608484 is digitally balanced in base 2, 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 (42).

It is not an unprimeable number, because it can be changed into a prime (138608489) 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, 824967 + ... + 825134.

It is an arithmetic number, because the mean of its divisors is an integer number (15400952).

Almost surely, 2^138608484 is an apocalyptic number.

138608484 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138608484 is an abundant number, since it is smaller than the sum of its proper divisors (231014364).

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

138608484 is a wasteful number, since it uses less digits than its factorization.

138608484 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1650115 (or 1650113 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 42.

The square root of 138608484 is about 11773.2104372597. The cubic root of 138608484 is about 517.5233362484.

The spelling of 138608484 in words is "one hundred thirty-eight million, six hundred eight thousand, four hundred eighty-four".