5028645978 has 12 divisors (see below), whose sum is σ = 10895399658. Its totient is φ = 1676215320.

The previous prime is 5028645931. The next prime is 5028645983. The reversal of 5028645978 is 8795468205.

5028645978 is a `hidden beast` number, since 502 + 8 + 6 + 45 + 97 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 4499323929 + 529322049 = 67077^2 + 23007^2 .

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 139684593 + ... + 139684628.

Almost surely, 2^5028645978 is an apocalyptic number.

5028645978 is an abundant number, since it is smaller than the sum of its proper divisors (5866753680).

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

5028645978 is a wasteful number, since it uses less digits than its factorization.

5028645978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279369229 (or 279369226 counting only the distinct ones).

The product of its (nonzero) digits is 4838400, while the sum is 54.

The square root of 5028645978 is about 70912.9464766484. The cubic root of 5028645978 is about 1713.2353255957.

The spelling of 5028645978 in words is "five billion, twenty-eight million, six hundred forty-five thousand, nine hundred seventy-eight".