139582428 has 24 divisors (see below), whose sum is σ = 329618688. Its totient is φ = 45966576.

The previous prime is 139582411. The next prime is 139582439. The reversal of 139582428 is 824285931.

139582428 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 139582428.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 69076 + ... + 71067.

It is an arithmetic number, because the mean of its divisors is an integer number (13734112).

Almost surely, 2^139582428 is an apocalyptic number.

It is an amenable number.

139582428 is an abundant number, since it is smaller than the sum of its proper divisors (190036260).

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

139582428 is a wasteful number, since it uses less digits than its factorization.

139582428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140233 (or 140231 counting only the distinct ones).

The product of its digits is 138240, while the sum is 42.

The square root of 139582428 is about 11814.5007511955. The cubic root of 139582428 is about 518.7326484156.

The spelling of 139582428 in words is "one hundred thirty-nine million, five hundred eighty-two thousand, four hundred twenty-eight".