139271328 has 216 divisors, whose sum is σ = 470564640. Its totient is φ = 38949120.

The previous prime is 139271303. The next prime is 139271351. The reversal of 139271328 is 823172931.

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

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 139271292 and 139271301.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 1001883 + ... + 1002021.

It is an arithmetic number, because the mean of its divisors is an integer number (2178540).

Almost surely, 2^139271328 is an apocalyptic number.

139271328 is a gapful number since it is divisible by the number (18) 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 139271328, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (235282320).

139271328 is an abundant number, since it is smaller than the sum of its proper divisors (331293312).

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

139271328 is a wasteful number, since it uses less digits than its factorization.

139271328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240 (or 222 counting only the distinct ones).

The product of its digits is 18144, while the sum is 36.

The square root of 139271328 is about 11801.3273829684. The cubic root of 139271328 is about 518.3469796026.

The spelling of 139271328 in words is "one hundred thirty-nine million, two hundred seventy-one thousand, three hundred twenty-eight".