30320534 has 4 divisors (see below), whose sum is σ = 45480804. Its totient is φ = 15160266.

The previous prime is 30320533. The next prime is 30320539. The reversal of 30320534 is 43502303.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30320531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7580132 + ... + 7580135.

It is an arithmetic number, because the mean of its divisors is an integer number (11370201).

Almost surely, 2^30320534 is an apocalyptic number.

30320534 is a deficient number, since it is larger than the sum of its proper divisors (15160270).

30320534 is a wasteful number, since it uses less digits than its factorization.

30320534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15160269.

The product of its (nonzero) digits is 1080, while the sum is 20.

The square root of 30320534 is about 5506.4084483445. The cubic root of 30320534 is about 311.8259699524.

Adding to 30320534 its reverse (43502303), we get a palindrome (73822837).

The spelling of 30320534 in words is "thirty million, three hundred twenty thousand, five hundred thirty-four".