30326257 has 16 divisors (see below), whose sum is σ = 34025040. Its totient is φ = 26836992.

The previous prime is 30326251. The next prime is 30326297. The reversal of 30326257 is 75262303.

It can be written as a sum of positive squares in 8 ways, for example, as 1263376 + 29062881 = 1124^2 + 5391^2 .

It is not a de Polignac number, because 30326257 - 2⁷ = 30326129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30326251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 96733 + ... + 97045.

It is an arithmetic number, because the mean of its divisors is an integer number (2126565).

Almost surely, 2^30326257 is an apocalyptic number.

It is an amenable number.

30326257 is a deficient number, since it is larger than the sum of its proper divisors (3698783).

30326257 is a wasteful number, since it uses less digits than its factorization.

30326257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 612.

The product of its (nonzero) digits is 7560, while the sum is 28.

The square root of 30326257 is about 5506.9280910504. The cubic root of 30326257 is about 311.8455877661.

The spelling of 30326257 in words is "thirty million, three hundred twenty-six thousand, two hundred fifty-seven".