457478278 has 8 divisors (see below), whose sum is σ = 696459672. Its totient is φ = 225325056.

The previous prime is 457478269. The next prime is 457478293. The reversal of 457478278 is 872874754.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1706875 + ... + 1707142.

It is an arithmetic number, because the mean of its divisors is an integer number (87057459).

Almost surely, 2^457478278 is an apocalyptic number.

457478278 is a deficient number, since it is larger than the sum of its proper divisors (238981394).

457478278 is a wasteful number, since it uses less digits than its factorization.

457478278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3414086.

The product of its digits is 3512320, while the sum is 52.

The square root of 457478278 is about 21388.7418517313. The cubic root of 457478278 is about 770.5310768156.

The spelling of 457478278 in words is "four hundred fifty-seven million, four hundred seventy-eight thousand, two hundred seventy-eight".