30133238 has 4 divisors (see below), whose sum is σ = 45199860. Its totient is φ = 15066618.

The previous prime is 30133217. The next prime is 30133273. The reversal of 30133238 is 83233103.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83233103 = 29 ⋅2870107.

It is a congruent number.

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, 7533308 + ... + 7533311.

It is an arithmetic number, because the mean of its divisors is an integer number (11299965).

Almost surely, 2^30133238 is an apocalyptic number.

30133238 is a deficient number, since it is larger than the sum of its proper divisors (15066622).

30133238 is a wasteful number, since it uses less digits than its factorization.

30133238 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15066621.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 30133238 is about 5489.3750099624. The cubic root of 30133238 is about 311.1825728792.

The spelling of 30133238 in words is "thirty million, one hundred thirty-three thousand, two hundred thirty-eight".