5478224778 has 128 divisors (see below), whose sum is σ = 13973299200. Its totient is φ = 1577797056.

The previous prime is 5478224701. The next prime is 5478224779. The reversal of 5478224778 is 8774228745.

5478224778 is a `hidden beast` number, since 547 + 8 + 2 + 24 + 7 + 78 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (5478224779) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 755253 + ... + 762471.

It is an arithmetic number, because the mean of its divisors is an integer number (109166400).

Almost surely, 2^5478224778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5478224778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6986649600).

5478224778 is an abundant number, since it is smaller than the sum of its proper divisors (8495074422).

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

5478224778 is a wasteful number, since it uses less digits than its factorization.

5478224778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7313 (or 7307 counting only the distinct ones).

The product of its digits is 7024640, while the sum is 54.

The square root of 5478224778 is about 74015.0307572725. The cubic root of 5478224778 is about 1762.8415678433.

The spelling of 5478224778 in words is "five billion, four hundred seventy-eight million, two hundred twenty-four thousand, seven hundred seventy-eight".