257032206 has 12 divisors (see below), whose sum is σ = 556903152. Its totient is φ = 85677396.

The previous prime is 257032201. The next prime is 257032207. The reversal of 257032206 is 602230752.

It is a self number, because there is not a number n which added to its sum of digits gives 257032206.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257032201) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7139766 + ... + 7139801.

It is an arithmetic number, because the mean of its divisors is an integer number (46408596).

Almost surely, 2^257032206 is an apocalyptic number.

257032206 is an abundant number, since it is smaller than the sum of its proper divisors (299870946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

257032206 is a wasteful number, since it uses less digits than its factorization.

257032206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14279575 (or 14279572 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 27.

The square root of 257032206 is about 16032.2239879563. The cubic root of 257032206 is about 635.8126747470.

Adding to 257032206 its reverse (602230752), we get a palindrome (859262958).

The spelling of 257032206 in words is "two hundred fifty-seven million, thirty-two thousand, two hundred six".