275306478 has 8 divisors (see below), whose sum is σ = 550612968. Its totient is φ = 91768824.

The previous prime is 275306477. The next prime is 275306503. The reversal of 275306478 is 874603572.

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

275306478 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (275306477) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22942201 + ... + 22942212.

It is an arithmetic number, because the mean of its divisors is an integer number (68826621).

Almost surely, 2^275306478 is an apocalyptic number.

275306478 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

275306478 is a wasteful number, since it uses less digits than its factorization.

275306478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45884418.

The product of its (nonzero) digits is 282240, while the sum is 42.

The square root of 275306478 is about 16592.3620379981. The cubic root of 275306478 is about 650.5372111110.

The spelling of 275306478 in words is "two hundred seventy-five million, three hundred six thousand, four hundred seventy-eight".