30889089 has 72 divisors (see below), whose sum is σ = 58698432. Its totient is φ = 15200640.

The previous prime is 30889073. The next prime is 30889097. The reversal of 30889089 is 98098803.

It is not a de Polignac number, because 30889089 - 2⁴ = 30889073 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (30889039) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 582787 + ... + 582839.

It is an arithmetic number, because the mean of its divisors is an integer number (815256).

Almost surely, 2^30889089 is an apocalyptic number.

It is an amenable number.

30889089 is a deficient number, since it is larger than the sum of its proper divisors (27809343).

30889089 is a wasteful number, since it uses less digits than its factorization.

30889089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 30889089 is about 5557.7953362822. The cubic root of 30889089 is about 313.7629792041.

The spelling of 30889089 in words is "thirty million, eight hundred eighty-nine thousand, eighty-nine".