30428837997 has 4 divisors (see below), whose sum is σ = 40571784000. Its totient is φ = 20285891996.

The previous prime is 30428837921. The next prime is 30428838019. The reversal of 30428837997 is 79973882403.

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 a cyclic number.

It is not a de Polignac number, because 30428837997 - 2¹² = 30428833901 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30428837997.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30428838997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5071472997 + ... + 5071473002.

It is an arithmetic number, because the mean of its divisors is an integer number (10142946000).

Almost surely, 2^30428837997 is an apocalyptic number.

It is an amenable number.

30428837997 is a deficient number, since it is larger than the sum of its proper divisors (10142946003).

30428837997 is a wasteful number, since it uses less digits than its factorization.

30428837997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10142946002.

The product of its (nonzero) digits is 18289152, while the sum is 60.

The spelling of 30428837997 in words is "thirty billion, four hundred twenty-eight million, eight hundred thirty-seven thousand, nine hundred ninety-seven".