257264198 has 8 divisors (see below), whose sum is σ = 389436960. Its totient is φ = 127451880.

The previous prime is 257264197. The next prime is 257264209. The reversal of 257264198 is 891462752.

It is a happy number.

257264198 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257264197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 589838 + ... + 590273.

It is an arithmetic number, because the mean of its divisors is an integer number (48679620).

Almost surely, 2^257264198 is an apocalyptic number.

257264198 is a deficient number, since it is larger than the sum of its proper divisors (132172762).

257264198 is a wasteful number, since it uses less digits than its factorization.

257264198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1180222.

The product of its digits is 241920, while the sum is 44.

The square root of 257264198 is about 16039.4575344679. The cubic root of 257264198 is about 636.0039077196.

The spelling of 257264198 in words is "two hundred fifty-seven million, two hundred sixty-four thousand, one hundred ninety-eight".