4878254640 has 160 divisors (see below), whose sum is σ = 17750292480. Its totient is φ = 1084879872.

The previous prime is 4878254639. The next prime is 4878254653. The reversal of 4878254640 is 464528784.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a self number, because there is not a number n which added to its sum of digits gives 4878254640.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 22921 + ... + 101399.

It is an arithmetic number, because the mean of its divisors is an integer number (110939328).

Almost surely, 2^4878254640 is an apocalyptic number.

4878254640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4878254640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8875146240).

4878254640 is an abundant number, since it is smaller than the sum of its proper divisors (12872037840).

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

4878254640 is a wasteful number, since it uses less digits than its factorization.

4878254640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78539 (or 78533 counting only the distinct ones).

The product of its (nonzero) digits is 1720320, while the sum is 48.

The square root of 4878254640 is about 69844.5032912397. The cubic root of 4878254640 is about 1695.9829767931.

The spelling of 4878254640 in words is "four billion, eight hundred seventy-eight million, two hundred fifty-four thousand, six hundred forty".