139601028 has 24 divisors (see below), whose sum is σ = 372269632. Its totient is φ = 39885984.

The previous prime is 139601027. The next prime is 139601051. The reversal of 139601028 is 820106931.

It is a junction number, because it is equal to n+sod(n) for n = 139600986 and 139601004.

It is not an unprimeable number, because it can be changed into a prime (139601027) 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, 830875 + ... + 831042.

Almost surely, 2^139601028 is an apocalyptic number.

It is an amenable number.

139601028 is an abundant number, since it is smaller than the sum of its proper divisors (232668604).

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

139601028 is a wasteful number, since it uses less digits than its factorization.

139601028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1661931 (or 1661929 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 139601028 is about 11815.2878932339. The cubic root of 139601028 is about 518.7556885620.

Adding to 139601028 its reverse (820106931), we get a palindrome (959707959).

The spelling of 139601028 in words is "one hundred thirty-nine million, six hundred one thousand, twenty-eight".