30675072 has 128 divisors (see below), whose sum is σ = 89303040. Its totient is φ = 9289728.

The previous prime is 30675041. The next prime is 30675119. The reversal of 30675072 is 27057603.

It is a tau number, because it is divible by the number of its divisors (128).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 241473 + ... + 241599.

It is an arithmetic number, because the mean of its divisors is an integer number (697680).

Almost surely, 2^30675072 is an apocalyptic number.

30675072 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30675072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44651520).

30675072 is an abundant number, since it is smaller than the sum of its proper divisors (58627968).

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

30675072 is a wasteful number, since it uses less digits than its factorization.

30675072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 198 (or 186 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 30.

The square root of 30675072 is about 5538.5081023684. The cubic root of 30675072 is about 313.0366569635.

The spelling of 30675072 in words is "thirty million, six hundred seventy-five thousand, seventy-two".