30318072 has 64 divisors (see below), whose sum is σ = 84499200. Its totient is φ = 9008640.

The previous prime is 30318049. The next prime is 30318083. The reversal of 30318072 is 27081303.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5797 + ... + 9707.

It is an arithmetic number, because the mean of its divisors is an integer number (1320300).

Almost surely, 2^30318072 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30318072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42249600).

30318072 is an abundant number, since it is smaller than the sum of its proper divisors (54181128).

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

30318072 is a wasteful number, since it uses less digits than its factorization.

30318072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3956 (or 3952 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 30318072 is about 5506.1848861076. The cubic root of 30318072 is about 311.8175297282.

Adding to 30318072 its reverse (27081303), we get a palindrome (57399375).

The spelling of 30318072 in words is "thirty million, three hundred eighteen thousand, seventy-two".