30752072 has 16 divisors (see below), whose sum is σ = 62095740. Its totient is φ = 14193216.

The previous prime is 30752023. The next prime is 30752077. The reversal of 30752072 is 27025703.

It can be written as a sum of positive squares in 2 ways, for example, as 21473956 + 9278116 = 4634^2 + 3046^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (30752077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147743 + ... + 147950.

Almost surely, 2^30752072 is an apocalyptic number.

It is an amenable number.

30752072 is an abundant number, since it is smaller than the sum of its proper divisors (31343668).

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

30752072 is a wasteful number, since it uses less digits than its factorization.

30752072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295712 (or 295708 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 26.

The square root of 30752072 is about 5545.4550760059. The cubic root of 30752072 is about 313.2983643888.

Adding to 30752072 its reverse (27025703), we get a palindrome (57777775).

The spelling of 30752072 in words is "thirty million, seven hundred fifty-two thousand, seventy-two".