30938889 has 8 divisors (see below), whose sum is σ = 41833152. Its totient is φ = 20335280.

The previous prime is 30938881. The next prime is 30938903. The reversal of 30938889 is 98883903.

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

It is a cyclic number.

It is not a de Polignac number, because 30938889 - 2³ = 30938881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30938881) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72414 + ... + 72839.

It is an arithmetic number, because the mean of its divisors is an integer number (5229144).

Almost surely, 2^30938889 is an apocalyptic number.

It is an amenable number.

30938889 is a deficient number, since it is larger than the sum of its proper divisors (10894263).

30938889 is a wasteful number, since it uses less digits than its factorization.

30938889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145327.

The product of its (nonzero) digits is 373248, while the sum is 48.

The square root of 30938889 is about 5562.2737257348. The cubic root of 30938889 is about 313.9315069615.

The spelling of 30938889 in words is "thirty million, nine hundred thirty-eight thousand, eight hundred eighty-nine".