139273280 has 112 divisors (see below), whose sum is σ = 351129600. Its totient is φ = 52512768.

The previous prime is 139273271. The next prime is 139273289. The reversal of 139273280 is 82372931.

139273280 is nontrivially palindromic in base 6.

It is an interprime number because it is at equal distance from previous prime (139273271) and next prime (139273289).

It is a self number, because there is not a number n which added to its sum of digits gives 139273280.

It is not an unprimeable number, because it can be changed into a prime (139273289) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 934646 + ... + 934794.

Almost surely, 2^139273280 is an apocalyptic number.

139273280 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 139273280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (175564800).

139273280 is an abundant number, since it is smaller than the sum of its proper divisors (211856320).

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

139273280 is a wasteful number, since it uses less digits than its factorization.

139273280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 316 (or 306 counting only the distinct ones).

The product of its (nonzero) digits is 18144, while the sum is 35.

The square root of 139273280 is about 11801.4100852398. The cubic root of 139273280 is about 518.3494012749.

The spelling of 139273280 in words is "one hundred thirty-nine million, two hundred seventy-three thousand, two hundred eighty".