30247842 has 32 divisors (see below), whose sum is σ = 62529408. Its totient is φ = 9749376.

The previous prime is 30247813. The next prime is 30247843. The reversal of 30247842 is 24874203.

It is a Smith number, since the sum of its digits (30) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (30247843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22563 + ... + 23865.

It is an arithmetic number, because the mean of its divisors is an integer number (1954044).

Almost surely, 2^30247842 is an apocalyptic number.

30247842 is an abundant number, since it is smaller than the sum of its proper divisors (32281566).

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

30247842 is a wasteful number, since it uses less digits than its factorization.

30247842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1434.

The product of its (nonzero) digits is 10752, while the sum is 30.

The square root of 30247842 is about 5499.8038146828. The cubic root of 30247842 is about 311.5765746953.

The spelling of 30247842 in words is "thirty million, two hundred forty-seven thousand, eight hundred forty-two".