30320542 has 32 divisors (see below), whose sum is σ = 56494080. Its totient is φ = 11910240.

The previous prime is 30320539. The next prime is 30320557. The reversal of 30320542 is 24502303.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6408 + ... + 10084.

It is an arithmetic number, because the mean of its divisors is an integer number (1765440).

Almost surely, 2^30320542 is an apocalyptic number.

30320542 is a deficient number, since it is larger than the sum of its proper divisors (26173538).

30320542 is a wasteful number, since it uses less digits than its factorization.

30320542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3736.

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 30320542 is about 5506.4091747708. The cubic root of 30320542 is about 311.8259973773.

Adding to 30320542 its reverse (24502303), we get a palindrome (54822845).

It can be divided in two parts, 303 and 20542, that multiplied together give a palindrome (6224226).

The spelling of 30320542 in words is "thirty million, three hundred twenty thousand, five hundred forty-two".