540478 has 4 divisors (see below), whose sum is σ = 810720. Its totient is φ = 270238.

The previous prime is 540469. The next prime is 540509. The reversal of 540478 is 874045.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 135118 + ... + 135121.

It is an arithmetic number, because the mean of its divisors is an integer number (202680).

2⁵⁴⁰⁴⁷⁸ is an apocalyptic number.

540478 is a deficient number, since it is larger than the sum of its proper divisors (270242).

540478 is a wasteful number, since it uses less digits than its factorization.

540478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270241.

The product of its (nonzero) digits is 4480, while the sum is 28.

The square root of 540478 is about 735.1720886976. The cubic root of 540478 is about 81.4565490343.

The spelling of 540478 in words is "five hundred forty thousand, four hundred seventy-eight".