30938738 has 8 divisors (see below), whose sum is σ = 46613232. Its totient is φ = 15400996.

The previous prime is 30938731. The next prime is 30938741. The reversal of 30938738 is 83783903.

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 = 30938695 and 30938704.

It is not an unprimeable number, because it can be changed into a prime (30938731) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 33620 + ... + 34527.

It is an arithmetic number, because the mean of its divisors is an integer number (5826654).

Almost surely, 2^30938738 is an apocalyptic number.

30938738 is a deficient number, since it is larger than the sum of its proper divisors (15674494).

30938738 is a wasteful number, since it uses less digits than its factorization.

30938738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68376.

The product of its (nonzero) digits is 108864, while the sum is 41.

The square root of 30938738 is about 5562.2601521324. The cubic root of 30938738 is about 313.9309962371.

The spelling of 30938738 in words is "thirty million, nine hundred thirty-eight thousand, seven hundred thirty-eight".