457728473 has 2 divisors, whose sum is σ = 457728474. Its totient is φ = 457728472.

The previous prime is 457728433. The next prime is 457728499. The reversal of 457728473 is 374827754.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 397324489 + 60403984 = 19933^2 + 7772^2 .

It is a cyclic number.

It is not a de Polignac number, because 457728473 - 2⁸ = 457728217 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (457728413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 228864236 + 228864237.

It is an arithmetic number, because the mean of its divisors is an integer number (228864237).

Almost surely, 2^457728473 is an apocalyptic number.

It is an amenable number.

457728473 is a deficient number, since it is larger than the sum of its proper divisors (1).

457728473 is an equidigital number, since it uses as much as digits as its factorization.

457728473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1317120, while the sum is 47.

The square root of 457728473 is about 21394.5898067712. The cubic root of 457728473 is about 770.6715191042.

It can be divided in two parts, 45772 and 8473, that added together give a palindrome (54245).

The spelling of 457728473 in words is "four hundred fifty-seven million, seven hundred twenty-eight thousand, four hundred seventy-three".