30138395 has 32 divisors (see below), whose sum is σ = 44651520. Its totient is φ = 19071360.

The previous prime is 30138371. The next prime is 30138401. The reversal of 30138395 is 59383103.

It is not a de Polignac number, because 30138395 - 2¹⁸ = 29876251 is a prime.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 22700 + ... + 23990.

It is an arithmetic number, because the mean of its divisors is an integer number (1395360).

Almost surely, 2^30138395 is an apocalyptic number.

30138395 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

30138395 is a deficient number, since it is larger than the sum of its proper divisors (14513125).

30138395 is a wasteful number, since it uses less digits than its factorization.

30138395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355.

The product of its (nonzero) digits is 9720, while the sum is 32.

The square root of 30138395 is about 5489.8447154724. The cubic root of 30138395 is about 311.2003237871.

The spelling of 30138395 in words is "thirty million, one hundred thirty-eight thousand, three hundred ninety-five".