138670080 has 208 divisors, whose sum is σ = 463151904. Its totient is φ = 35389440.

The previous prime is 138670079. The next prime is 138670109. The reversal of 138670080 is 80076831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2273250 + ... + 2273310.

Almost surely, 2^138670080 is an apocalyptic number.

138670080 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 138670080, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (231575952).

138670080 is an abundant number, since it is smaller than the sum of its proper divisors (324481824).

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

138670080 is an equidigital number, since it uses as much as digits as its factorization.

138670080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130 (or 108 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 33.

The square root of 138670080 is about 11775.8260856723. The cubic root of 138670080 is about 517.5999853483.

The spelling of 138670080 in words is "one hundred thirty-eight million, six hundred seventy thousand, eighty".