139352228 has 12 divisors (see below), whose sum is σ = 247506672. Its totient is φ = 68636040.

The previous prime is 139352201. The next prime is 139352231. The reversal of 139352228 is 822253931.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 259718 + ... + 260253.

It is an arithmetic number, because the mean of its divisors is an integer number (20625556).

Almost surely, 2^139352228 is an apocalyptic number.

It is an amenable number.

139352228 is a deficient number, since it is larger than the sum of its proper divisors (108154444).

139352228 is a wasteful number, since it uses less digits than its factorization.

139352228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 520042 (or 520040 counting only the distinct ones).

The product of its digits is 25920, while the sum is 35.

The square root of 139352228 is about 11804.7544658921. The cubic root of 139352228 is about 518.4473260612.

The spelling of 139352228 in words is "one hundred thirty-nine million, three hundred fifty-two thousand, two hundred twenty-eight".