30738923 has 4 divisors (see below), whose sum is σ = 30844128. Its totient is φ = 30633720.

The previous prime is 30738901. The next prime is 30738943. The reversal of 30738923 is 32983703.

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

It is a cyclic number.

It is not a de Polignac number, because 30738923 - 2⁶ = 30738859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30738943) 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, 52163 + ... + 52748.

It is an arithmetic number, because the mean of its divisors is an integer number (7711032).

Almost surely, 2^30738923 is an apocalyptic number.

30738923 is a deficient number, since it is larger than the sum of its proper divisors (105205).

30738923 is a wasteful number, since it uses less digits than its factorization.

30738923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105204.

The product of its (nonzero) digits is 27216, while the sum is 35.

The square root of 30738923 is about 5544.2693837872. The cubic root of 30738923 is about 313.2537045528.

The spelling of 30738923 in words is "thirty million, seven hundred thirty-eight thousand, nine hundred twenty-three".