139816730 has 16 divisors (see below), whose sum is σ = 251903520. Its totient is φ = 55874832.

The previous prime is 139816723. The next prime is 139816741. The reversal of 139816730 is 37618931.

139816730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 5981 + ... + 17759.

It is an arithmetic number, because the mean of its divisors is an integer number (15743970).

Almost surely, 2^139816730 is an apocalyptic number.

139816730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139816730 is a deficient number, since it is larger than the sum of its proper divisors (112086790).

139816730 is a wasteful number, since it uses less digits than its factorization.

139816730 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12973.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 139816730 is about 11824.4124589766. The cubic root of 139816730 is about 519.0227330551.

The spelling of 139816730 in words is "one hundred thirty-nine million, eight hundred sixteen thousand, seven hundred thirty".