30270942 has 96 divisors (see below), whose sum is σ = 75893760. Its totient is φ = 8929440.

The previous prime is 30270937. The next prime is 30270949. The reversal of 30270942 is 24907203.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30270949) 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 47 ways as a sum of consecutive naturals, for example, 282853 + ... + 282959.

It is an arithmetic number, because the mean of its divisors is an integer number (790560).

Almost surely, 2^30270942 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30270942, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37946880).

30270942 is an abundant number, since it is smaller than the sum of its proper divisors (45622818).

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

30270942 is a wasteful number, since it uses less digits than its factorization.

30270942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 156 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 30270942 is about 5501.9034887937. The cubic root of 30270942 is about 311.6558705720.

The spelling of 30270942 in words is "thirty million, two hundred seventy thousand, nine hundred forty-two".