30457172 has 6 divisors (see below), whose sum is σ = 53300058. Its totient is φ = 15228584.

The previous prime is 30457151. The next prime is 30457177. The reversal of 30457172 is 27175403.

It can be written as a sum of positive squares in only one way, i.e., 29986576 + 470596 = 5476^2 + 686^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30457177) 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 as a sum of consecutive naturals, namely, 3807143 + ... + 3807150.

It is an arithmetic number, because the mean of its divisors is an integer number (8883343).

Almost surely, 2^30457172 is an apocalyptic number.

It is an amenable number.

30457172 is a deficient number, since it is larger than the sum of its proper divisors (22842886).

30457172 is a wasteful number, since it uses less digits than its factorization.

30457172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7614297 (or 7614295 counting only the distinct ones).

The product of its (nonzero) digits is 5880, while the sum is 29.

The square root of 30457172 is about 5518.8016815247. The cubic root of 30457172 is about 312.2936775694.

The spelling of 30457172 in words is "thirty million, four hundred fifty-seven thousand, one hundred seventy-two".