30442573 has 12 divisors (see below), whose sum is σ = 35580540. Its totient is φ = 25970112.

The previous prime is 30442567. The next prime is 30442583. The reversal of 30442573 is 37524403.

It can be written as a sum of positive squares in 2 ways, for example, as 29354724 + 1087849 = 5418^2 + 1043^2 .

It is not a de Polignac number, because 30442573 - 2¹³ = 30434381 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 (30442543) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9865 + ... + 12577.

It is an arithmetic number, because the mean of its divisors is an integer number (2965045).

Almost surely, 2^30442573 is an apocalyptic number.

It is an amenable number.

30442573 is a deficient number, since it is larger than the sum of its proper divisors (5137967).

30442573 is a wasteful number, since it uses less digits than its factorization.

30442573 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2956 (or 2949 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 28.

The square root of 30442573 is about 5517.4788626691. The cubic root of 30442573 is about 312.2437724759.

Adding to 30442573 its reverse (37524403), we get a palindrome (67966976).

The spelling of 30442573 in words is "thirty million, four hundred forty-two thousand, five hundred seventy-three".