30670138 has 4 divisors (see below), whose sum is σ = 46005210. Its totient is φ = 15335068.

The previous prime is 30670127. The next prime is 30670141. The reversal of 30670138 is 83107603.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 28164249 + 2505889 = 5307^2 + 1583^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7667533 + ... + 7667536.

Almost surely, 2^30670138 is an apocalyptic number.

30670138 is a deficient number, since it is larger than the sum of its proper divisors (15335072).

30670138 is a wasteful number, since it uses less digits than its factorization.

30670138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15335071.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 30670138 is about 5538.0626576448. The cubic root of 30670138 is about 313.0198723718.

The spelling of 30670138 in words is "thirty million, six hundred seventy thousand, one hundred thirty-eight".