257430046 has 16 divisors (see below), whose sum is σ = 393611904. Its totient is φ = 126249984.

The previous prime is 257430037. The next prime is 257430049. The reversal of 257430046 is 640034752.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (257430049) 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 7 ways as a sum of consecutive naturals, for example, 16051 + ... + 27793.

It is an arithmetic number, because the mean of its divisors is an integer number (24600744).

Almost surely, 2^257430046 is an apocalyptic number.

257430046 is a deficient number, since it is larger than the sum of its proper divisors (136181858).

257430046 is a wasteful number, since it uses less digits than its factorization.

257430046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11955.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 257430046 is about 16044.6267017965. The cubic root of 257430046 is about 636.1405471727.

Adding to 257430046 its reverse (640034752), we get a palindrome (897464798).

The spelling of 257430046 in words is "two hundred fifty-seven million, four hundred thirty thousand, forty-six".