30643242 has 16 divisors (see below), whose sum is σ = 70041792. Its totient is φ = 8755200.

The previous prime is 30643241. The next prime is 30643259. The reversal of 30643242 is 24234603.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (30643241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 364759 + ... + 364842.

It is an arithmetic number, because the mean of its divisors is an integer number (4377612).

Almost surely, 2^30643242 is an apocalyptic number.

30643242 is an abundant number, since it is smaller than the sum of its proper divisors (39398550).

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

30643242 is a wasteful number, since it uses less digits than its factorization.

30643242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 729613.

The product of its (nonzero) digits is 3456, while the sum is 24.

The square root of 30643242 is about 5535.6338390468. The cubic root of 30643242 is about 312.9283452901.

Adding to 30643242 its reverse (24234603), we get a palindrome (54877845).

The spelling of 30643242 in words is "thirty million, six hundred forty-three thousand, two hundred forty-two".