30387642 has 16 divisors (see below), whose sum is σ = 62258112. Its totient is φ = 9882080.

The previous prime is 30387641. The next prime is 30387647. The reversal of 30387642 is 24678303.

It is not an unprimeable number, because it can be changed into a prime (30387641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 61518 + ... + 62009.

It is an arithmetic number, because the mean of its divisors is an integer number (3891132).

Almost surely, 2^30387642 is an apocalyptic number.

30387642 is an abundant number, since it is smaller than the sum of its proper divisors (31870470).

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

30387642 is a wasteful number, since it uses less digits than its factorization.

30387642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123573.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 30387642 is about 5512.4987074828. The cubic root of 30387642 is about 312.0558537415.

The spelling of 30387642 in words is "thirty million, three hundred eighty-seven thousand, six hundred forty-two".