4778343240 has 128 divisors (see below), whose sum is σ = 15767982720. Its totient is φ = 1158347520.

The previous prime is 4778343217. The next prime is 4778343247. The reversal of 4778343240 is 423438774.

It is a super-3 number, since 3×4778343240³ (a number of 30 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 4778343192 and 4778343201.

It is not an unprimeable number, because it can be changed into a prime (4778343247) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144762 + ... + 174678.

It is an arithmetic number, because the mean of its divisors is an integer number (123187365).

Almost surely, 2^4778343240 is an apocalyptic number.

4778343240 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 4778343240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (7883991360).

4778343240 is an abundant number, since it is smaller than the sum of its proper divisors (10989639480).

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

4778343240 is a wasteful number, since it uses less digits than its factorization.

4778343240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29964 (or 29938 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 42.

The square root of 4778343240 is about 69125.5614082085. The cubic root of 4778343240 is about 1684.3245585339.

The spelling of 4778343240 in words is "four billion, seven hundred seventy-eight million, three hundred forty-three thousand, two hundred forty".