139611228 has 48 divisors (see below), whose sum is σ = 342021120. Its totient is φ = 44265600.

The previous prime is 139611223. The next prime is 139611253. The reversal of 139611228 is 822116931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139611223) 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 15 ways as a sum of consecutive naturals, for example, 18768 + ... + 25128.

It is an arithmetic number, because the mean of its divisors is an integer number (7125440).

Almost surely, 2^139611228 is an apocalyptic number.

It is an amenable number.

139611228 is an abundant number, since it is smaller than the sum of its proper divisors (202409892).

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

139611228 is a wasteful number, since it uses less digits than its factorization.

139611228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6458 (or 6456 counting only the distinct ones).

The product of its digits is 5184, while the sum is 33.

The square root of 139611228 is about 11815.7195295081. The cubic root of 139611228 is about 518.7683226121.

The spelling of 139611228 in words is "one hundred thirty-nine million, six hundred eleven thousand, two hundred twenty-eight".