30707272 has 8 divisors (see below), whose sum is σ = 57576150. Its totient is φ = 15353632.

The previous prime is 30707269. The next prime is 30707273. The reversal of 30707272 is 27270703.

It can be written as a sum of positive squares in only one way, i.e., 17355556 + 13351716 = 4166^2 + 3654^2 .

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

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 30707272.

It is not an unprimeable number, because it can be changed into a prime (30707273) 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 as a sum of consecutive naturals, namely, 1919197 + ... + 1919212.

Almost surely, 2^30707272 is an apocalyptic number.

It is an amenable number.

30707272 is a deficient number, since it is larger than the sum of its proper divisors (26868878).

30707272 is a wasteful number, since it uses less digits than its factorization.

30707272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3838415 (or 3838411 counting only the distinct ones).

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 30707272 is about 5541.4142599160. The cubic root of 30707272 is about 313.1461514683.

Adding to 30707272 its reverse (27270703), we get a palindrome (57977975).

The spelling of 30707272 in words is "thirty million, seven hundred seven thousand, two hundred seventy-two".