4628378820 has 96 divisors (see below), whose sum is σ = 13993684992. Its totient is φ = 1136245248.

The previous prime is 4628378813. The next prime is 4628378861. The reversal of 4628378820 is 288738264.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 4628378820.

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, 290994 + ... + 306486.

It is an arithmetic number, because the mean of its divisors is an integer number (145767552).

Almost surely, 2^4628378820 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4628378820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6996842496).

4628378820 is an abundant number, since it is smaller than the sum of its proper divisors (9365306172).

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

4628378820 is a wasteful number, since it uses less digits than its factorization.

4628378820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15901 (or 15899 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 48.

The square root of 4628378820 is about 68032.1895869889. The cubic root of 4628378820 is about 1666.5165559916.

The spelling of 4628378820 in words is "four billion, six hundred twenty-eight million, three hundred seventy-eight thousand, eight hundred twenty".