30422742 has 64 divisors (see below), whose sum is σ = 72161280. Its totient is φ = 8371584.

The previous prime is 30422683. The next prime is 30422747. The reversal of 30422742 is 24722403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30422747) 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 31 ways as a sum of consecutive naturals, for example, 175768 + ... + 175940.

It is an arithmetic number, because the mean of its divisors is an integer number (1127520).

Almost surely, 2^30422742 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30422742, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (36080640).

30422742 is an abundant number, since it is smaller than the sum of its proper divisors (41738538).

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

30422742 is a wasteful number, since it uses less digits than its factorization.

30422742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 317.

The product of its (nonzero) digits is 2688, while the sum is 24.

The square root of 30422742 is about 5515.6814628838. The cubic root of 30422742 is about 312.1759567967.

The spelling of 30422742 in words is "thirty million, four hundred twenty-two thousand, seven hundred forty-two".