138030070 has 16 divisors (see below), whose sum is σ = 253741248. Its totient is φ = 54037120.

The previous prime is 138030059. The next prime is 138030071. The reversal of 138030070 is 70030831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138030071) 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, 146371 + ... + 147310.

It is an arithmetic number, because the mean of its divisors is an integer number (15858828).

Almost surely, 2^138030070 is an apocalyptic number.

138030070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138030070 is a deficient number, since it is larger than the sum of its proper divisors (115711178).

138030070 is a wasteful number, since it uses less digits than its factorization.

138030070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 293735.

The product of its (nonzero) digits is 504, while the sum is 22.

The square root of 138030070 is about 11748.6199189522. The cubic root of 138030070 is about 516.8024566199.

The spelling of 138030070 in words is "one hundred thirty-eight million, thirty thousand, seventy".