139708030 has 32 divisors (see below), whose sum is σ = 313528320. Its totient is φ = 43545120.

The previous prime is 139708013. The next prime is 139708031. The reversal of 139708030 is 30807931.

It is a junction number, because it is equal to n+sod(n) for n = 139707983 and 139708001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139708031) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 89950 + ... + 91489.

It is an arithmetic number, because the mean of its divisors is an integer number (9797760).

Almost surely, 2^139708030 is an apocalyptic number.

139708030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139708030 is an abundant number, since it is smaller than the sum of its proper divisors (173820290).

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

139708030 is a wasteful number, since it uses less digits than its factorization.

139708030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181464.

The product of its (nonzero) digits is 4536, while the sum is 31.

The square root of 139708030 is about 11819.8151423785. The cubic root of 139708030 is about 518.8881940816. Note that the first 3 decimals are identical.

The spelling of 139708030 in words is "one hundred thirty-nine million, seven hundred eight thousand, thirty".