139308672 has 64 divisors (see below), whose sum is σ = 371361600. Its totient is φ = 46270464.

The previous prime is 139308671. The next prime is 139308683. The reversal of 139308672 is 276803931.

It is a tau number, because it is divible by the number of its divisors (64).

It is a self number, because there is not a number n which added to its sum of digits gives 139308672.

It is not an unprimeable number, because it can be changed into a prime (139308671) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156613 + ... + 157499.

It is an arithmetic number, because the mean of its divisors is an integer number (5802525).

Almost surely, 2^139308672 is an apocalyptic number.

139308672 is a gapful number since it is divisible by the number (12) 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 139308672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (185680800).

139308672 is an abundant number, since it is smaller than the sum of its proper divisors (232052928).

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

139308672 is an equidigital number, since it uses as much as digits as its factorization.

139308672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1313 (or 1301 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 39.

The square root of 139308672 is about 11802.9094718209. The cubic root of 139308672 is about 518.3933050499.

The spelling of 139308672 in words is "one hundred thirty-nine million, three hundred eight thousand, six hundred seventy-two".