139016228 has 24 divisors (see below), whose sum is σ = 262338552. Its totient is φ = 64076544.

The previous prime is 139016203. The next prime is 139016243. The reversal of 139016228 is 822610931.

It can be written as a sum of positive squares in 4 ways, for example, as 16957924 + 122058304 = 4118^2 + 11048^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139016194 and 139016203.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 55826 + ... + 58262.

It is an arithmetic number, because the mean of its divisors is an integer number (10930773).

Almost surely, 2^139016228 is an apocalyptic number.

It is an amenable number.

139016228 is a deficient number, since it is larger than the sum of its proper divisors (123322324).

139016228 is a wasteful number, since it uses less digits than its factorization.

139016228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3551 (or 3549 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 139016228 is about 11790.5143229632. The cubic root of 139016228 is about 518.0303048712.

The spelling of 139016228 in words is "one hundred thirty-nine million, sixteen thousand, two hundred twenty-eight".