139356224 has 56 divisors (see below), whose sum is σ = 317845440. Its totient is φ = 59383296.

The previous prime is 139356221. The next prime is 139356251. The reversal of 139356224 is 422653931.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (139356221) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87467 + ... + 89045.

Almost surely, 2^139356224 is an apocalyptic number.

139356224 is a gapful number since it is divisible by the number (14) 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 139356224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (158922720).

139356224 is an abundant number, since it is smaller than the sum of its proper divisors (178489216).

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

139356224 is a wasteful number, since it uses less digits than its factorization.

139356224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1795 (or 1785 counting only the distinct ones).

The product of its digits is 38880, while the sum is 35.

The square root of 139356224 is about 11804.9237185168. The cubic root of 139356224 is about 518.4522815990.

The spelling of 139356224 in words is "one hundred thirty-nine million, three hundred fifty-six thousand, two hundred twenty-four".