138468960 has 384 divisors, whose sum is σ = 585446400. Its totient is φ = 29859840.

The previous prime is 138468949. The next prime is 138469031. The reversal of 138468960 is 69864831.

138468960 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 (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 574440 + ... + 574680.

It is an arithmetic number, because the mean of its divisors is an integer number (1524600).

Almost surely, 2^138468960 is an apocalyptic number.

138468960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138468960, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (292723200).

138468960 is an abundant number, since it is smaller than the sum of its proper divisors (446977440).

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

138468960 is a wasteful number, since it uses less digits than its factorization.

138468960 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 277 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 138468960 is about 11767.2834588107. The cubic root of 138468960 is about 517.3496307498.

The spelling of 138468960 in words is "one hundred thirty-eight million, four hundred sixty-eight thousand, nine hundred sixty".