30216642 has 16 divisors (see below), whose sum is σ = 62067072. Its totient is φ = 9799920.

The previous prime is 30216623. The next prime is 30216643. The reversal of 30216642 is 24661203.

It is not an unprimeable number, because it can be changed into a prime (30216643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67834 + ... + 68277.

It is an arithmetic number, because the mean of its divisors is an integer number (3879192).

Almost surely, 2^30216642 is an apocalyptic number.

30216642 is an abundant number, since it is smaller than the sum of its proper divisors (31850430).

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

30216642 is a wasteful number, since it uses less digits than its factorization.

30216642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136153.

The product of its (nonzero) digits is 1728, while the sum is 24.

The square root of 30216642 is about 5496.9666180540. The cubic root of 30216642 is about 311.4694096569.

Adding to 30216642 its reverse (24661203), we get a palindrome (54877845).

The spelling of 30216642 in words is "thirty million, two hundred sixteen thousand, six hundred forty-two".