30742192 has 20 divisors (see below), whose sum is σ = 64145200. Its totient is φ = 14188608.

The previous prime is 30742189. The next prime is 30742193. The reversal of 30742192 is 29124703.

It is a self number, because there is not a number n which added to its sum of digits gives 30742192.

It is not an unprimeable number, because it can be changed into a prime (30742193) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 73692 + ... + 74107.

It is an arithmetic number, because the mean of its divisors is an integer number (3207260).

Almost surely, 2^30742192 is an apocalyptic number.

It is an amenable number.

30742192 is an abundant number, since it is smaller than the sum of its proper divisors (33403008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30742192 is a wasteful number, since it uses less digits than its factorization.

30742192 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147820 (or 147814 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 30742192 is about 5544.5641848571. The cubic root of 30742192 is about 313.2648087161.

Adding to 30742192 its reverse (29124703), we get a palindrome (59866895).

The spelling of 30742192 in words is "thirty million, seven hundred forty-two thousand, one hundred ninety-two".