30124389 has 4 divisors (see below), whose sum is σ = 40165856. Its totient is φ = 20082924.

The previous prime is 30124387. The next prime is 30124403. The reversal of 30124389 is 98342103.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30124389 - 2¹ = 30124387 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30124387) 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, 5020729 + ... + 5020734.

It is an arithmetic number, because the mean of its divisors is an integer number (10041464).

Almost surely, 2^30124389 is an apocalyptic number.

It is an amenable number.

30124389 is a deficient number, since it is larger than the sum of its proper divisors (10041467).

30124389 is a wasteful number, since it uses less digits than its factorization.

30124389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10041466.

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 30124389 is about 5488.5689391680. The cubic root of 30124389 is about 311.1521090198.

The spelling of 30124389 in words is "thirty million, one hundred twenty-four thousand, three hundred eighty-nine".