30302072 has 8 divisors (see below), whose sum is σ = 56816400. Its totient is φ = 15151032.

The previous prime is 30302059. The next prime is 30302101. The reversal of 30302072 is 27020303.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 30302072.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1893872 + ... + 1893887.

It is an arithmetic number, because the mean of its divisors is an integer number (7102050).

Almost surely, 2^30302072 is an apocalyptic number.

It is an amenable number.

30302072 is a deficient number, since it is larger than the sum of its proper divisors (26514328).

30302072 is a wasteful number, since it uses less digits than its factorization.

30302072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3787765 (or 3787761 counting only the distinct ones).

The product of its (nonzero) digits is 252, while the sum is 17.

The square root of 30302072 is about 5504.7317827484. The cubic root of 30302072 is about 311.7626674184.

Adding to 30302072 its reverse (27020303), we get a palindrome (57322375).

The spelling of 30302072 in words is "thirty million, three hundred two thousand, seventy-two".