139082784 has 24 divisors (see below), whose sum is σ = 365092560. Its totient is φ = 46360896.

The previous prime is 139082747. The next prime is 139082791. The reversal of 139082784 is 487280931.

It is a tau number, because it is divible by the number of its divisors (24).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 724294 + ... + 724485.

It is an arithmetic number, because the mean of its divisors is an integer number (15212190).

Almost surely, 2^139082784 is an apocalyptic number.

It is an amenable number.

139082784 is an abundant number, since it is smaller than the sum of its proper divisors (226009776).

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

139082784 is a wasteful number, since it uses less digits than its factorization.

139082784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1448792 (or 1448784 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 42.

The square root of 139082784 is about 11793.3364235911. The cubic root of 139082784 is about 518.1129631446.

The spelling of 139082784 in words is "one hundred thirty-nine million, eighty-two thousand, seven hundred eighty-four".