4978924128 has 36 divisors (see below), whose sum is σ = 14158816308. Its totient is φ = 1659641280.

The previous prime is 4978924121. The next prime is 4978924133. The reversal of 4978924128 is 8214298794.

4978924128 is a `hidden beast` number, since 497 + 8 + 9 + 24 + 128 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4978924121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8643678 + ... + 8644253.

It is an arithmetic number, because the mean of its divisors is an integer number (393300453).

Almost surely, 2^4978924128 is an apocalyptic number.

4978924128 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4978924128 is an abundant number, since it is smaller than the sum of its proper divisors (9179892180).

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

4978924128 is a wasteful number, since it uses less digits than its factorization.

4978924128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17287947 (or 17287936 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The square root of 4978924128 is about 70561.4918209642. The cubic root of 4978924128 is about 1707.5699473228.

The spelling of 4978924128 in words is "four billion, nine hundred seventy-eight million, nine hundred twenty-four thousand, one hundred twenty-eight".