30197457 has 12 divisors (see below), whose sum is σ = 46184580. Its totient is φ = 18947328.

The previous prime is 30197429. The next prime is 30197467. The reversal of 30197457 is 75479103.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25040016 + 5157441 = 5004^2 + 2271^2 .

It is not a de Polignac number, because 30197457 - 2¹⁵ = 30164689 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30197407) 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 11 ways as a sum of consecutive naturals, for example, 98532 + ... + 98837.

It is an arithmetic number, because the mean of its divisors is an integer number (3848715).

Almost surely, 2^30197457 is an apocalyptic number.

It is an amenable number.

30197457 is a deficient number, since it is larger than the sum of its proper divisors (15987123).

30197457 is a wasteful number, since it uses less digits than its factorization.

30197457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197392 (or 197389 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 30197457 is about 5495.2212876280. The cubic root of 30197457 is about 311.4034768317.

The spelling of 30197457 in words is "thirty million, one hundred ninety-seven thousand, four hundred fifty-seven".