5478978 has 16 divisors (see below), whose sum is σ = 11191680. Its totient is φ = 1787376.

The previous prime is 5478937. The next prime is 5478989. The reversal of 5478978 is 8798745.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9433 + ... + 9996.

It is an arithmetic number, because the mean of its divisors is an integer number (699480).

Almost surely, 2^5478978 is an apocalyptic number.

5478978 is an abundant number, since it is smaller than the sum of its proper divisors (5712702).

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

5478978 is a wasteful number, since it uses less digits than its factorization.

5478978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19481.

The product of its digits is 564480, while the sum is 48.

The square root of 5478978 is about 2340.7216835839. The cubic root of 5478978 is about 176.2922357409.

The spelling of 5478978 in words is "five million, four hundred seventy-eight thousand, nine hundred seventy-eight".