30749938 has 8 divisors (see below), whose sum is σ = 47106432. Its totient is φ = 15047796.

The previous prime is 30749903. The next prime is 30749963. The reversal of 30749938 is 83994703.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 30749894 and 30749903.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 163470 + ... + 163657.

It is an arithmetic number, because the mean of its divisors is an integer number (5888304).

Almost surely, 2^30749938 is an apocalyptic number.

30749938 is a deficient number, since it is larger than the sum of its proper divisors (16356494).

30749938 is a wasteful number, since it uses less digits than its factorization.

30749938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327176.

The product of its (nonzero) digits is 163296, while the sum is 43.

The square root of 30749938 is about 5545.2626628502. The cubic root of 30749938 is about 313.2911172438.

The spelling of 30749938 in words is "thirty million, seven hundred forty-nine thousand, nine hundred thirty-eight".