30675257 has 16 divisors (see below), whose sum is σ = 32832912. Its totient is φ = 28615680.

The previous prime is 30675251. The next prime is 30675269. The reversal of 30675257 is 75257603.

It can be written as a sum of positive squares in 8 ways, for example, as 1201216 + 29474041 = 1096^2 + 5429^2 .

It is a cyclic number.

It is not a de Polignac number, because 30675257 - 2¹⁰ = 30674233 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30675251) 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 15 ways as a sum of consecutive naturals, for example, 110603 + ... + 110879.

It is an arithmetic number, because the mean of its divisors is an integer number (2052057).

Almost surely, 2^30675257 is an apocalyptic number.

30675257 is a gapful number since it is divisible by the number (37) formed by its first and last digit.

It is an amenable number.

30675257 is a deficient number, since it is larger than the sum of its proper divisors (2157655).

30675257 is a wasteful number, since it uses less digits than its factorization.

30675257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 428.

The product of its (nonzero) digits is 44100, while the sum is 35.

The square root of 30675257 is about 5538.5248035917. The cubic root of 30675257 is about 313.0372862657.

The spelling of 30675257 in words is "thirty million, six hundred seventy-five thousand, two hundred fifty-seven".