138275030 has 16 divisors (see below), whose sum is σ = 251223120. Its totient is φ = 54792672.

The previous prime is 138275021. The next prime is 138275047. The reversal of 138275030 is 30572831.

It is a junction number, because it is equal to n+sod(n) for n = 138274984 and 138275002.

It is a congruent number.

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, 63545 + ... + 65684.

It is an arithmetic number, because the mean of its divisors is an integer number (15701445).

Almost surely, 2^138275030 is an apocalyptic number.

138275030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138275030 is a deficient number, since it is larger than the sum of its proper divisors (112948090).

138275030 is a wasteful number, since it uses less digits than its factorization.

138275030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129343.

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 138275030 is about 11759.0403520015. The cubic root of 138275030 is about 517.1079965992.

The spelling of 138275030 in words is "one hundred thirty-eight million, two hundred seventy-five thousand, thirty".