30428037 has 6 divisors (see below), whose sum is σ = 43951622. Its totient is φ = 20285352.

The previous prime is 30428003. The next prime is 30428039. The reversal of 30428037 is 73082403.

It can be written as a sum of positive squares in only one way, i.e., 26718561 + 3709476 = 5169^2 + 1926^2 .

It is not a de Polignac number, because 30428037 - 2¹⁰ = 30427013 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30428037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30428039) 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 5 ways as a sum of consecutive naturals, for example, 1690438 + ... + 1690455.

Almost surely, 2^30428037 is an apocalyptic number.

It is an amenable number.

30428037 is a deficient number, since it is larger than the sum of its proper divisors (13523585).

30428037 is a wasteful number, since it uses less digits than its factorization.

30428037 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3380899 (or 3380896 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 30428037 is about 5516.1614370865. The cubic root of 30428037 is about 312.1940668868.

The spelling of 30428037 in words is "thirty million, four hundred twenty-eight thousand, thirty-seven".