30872084 has 12 divisors (see below), whose sum is σ = 54325908. Its totient is φ = 15350400.

The previous prime is 30872081. The next prime is 30872089. The reversal of 30872084 is 48027803.

It can be written as a sum of positive squares in 2 ways, for example, as 7562500 + 23309584 = 2750^2 + 4828^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 30872084.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30872081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20597 + ... + 22044.

It is an arithmetic number, because the mean of its divisors is an integer number (4527159).

Almost surely, 2^30872084 is an apocalyptic number.

It is an amenable number.

30872084 is a deficient number, since it is larger than the sum of its proper divisors (23453824).

30872084 is a wasteful number, since it uses less digits than its factorization.

30872084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42826 (or 42824 counting only the distinct ones).

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 30872084 is about 5556.2652924424. The cubic root of 30872084 is about 313.7053912441.

Adding to 30872084 its reverse (48027803), we get a palindrome (78899887).

The spelling of 30872084 in words is "thirty million, eight hundred seventy-two thousand, eighty-four".