457730478 has 48 divisors (see below), whose sum is σ = 1043458416. Its totient is φ = 144823680.

The previous prime is 457730477. The next prime is 457730489. The reversal of 457730478 is 874037754.

457730478 is a `hidden beast` number, since 4 + 577 + 3 + 0 + 4 + 78 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457730473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18925 + ... + 35687.

It is an arithmetic number, because the mean of its divisors is an integer number (21738717).

Almost surely, 2^457730478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 457730478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (521729208).

457730478 is an abundant number, since it is smaller than the sum of its proper divisors (585727938).

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

457730478 is a wasteful number, since it uses less digits than its factorization.

457730478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16849 (or 16846 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The square root of 457730478 is about 21394.6366643605. The cubic root of 457730478 is about 770.6726443667.

The spelling of 457730478 in words is "four hundred fifty-seven million, seven hundred thirty thousand, four hundred seventy-eight".