139453028 has 24 divisors (see below), whose sum is σ = 286708800. Its totient is φ = 58511520.

The previous prime is 139453021. The next prime is 139453087. The reversal of 139453028 is 820354931.

It is not an unprimeable number, because it can be changed into a prime (139453021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121328 + ... + 122471.

It is an arithmetic number, because the mean of its divisors is an integer number (11946200).

Almost surely, 2^139453028 is an apocalyptic number.

It is an amenable number.

139453028 is an abundant number, since it is smaller than the sum of its proper divisors (147255772).

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

139453028 is a wasteful number, since it uses less digits than its factorization.

139453028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243827 (or 243825 counting only the distinct ones).

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

The square root of 139453028 is about 11809.0231602788. The cubic root of 139453028 is about 518.5723016852.

The spelling of 139453028 in words is "one hundred thirty-nine million, four hundred fifty-three thousand, twenty-eight".