4278357720 has 384 divisors, whose sum is σ = 17357558400. Its totient is φ = 889823232.

The previous prime is 4278357679. The next prime is 4278357731. The reversal of 4278357720 is 277538724.

4278357720 is a `hidden beast` number, since 4 + 2 + 78 + 3 + 577 + 2 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent 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 95 ways as a sum of consecutive naturals, for example, 2390586 + ... + 2392374.

It is an arithmetic number, because the mean of its divisors is an integer number (45201975).

Almost surely, 2^4278357720 is an apocalyptic number.

4278357720 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 4278357720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8678779200).

4278357720 is an abundant number, since it is smaller than the sum of its proper divisors (13079200680).

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

4278357720 is a wasteful number, since it uses less digits than its factorization.

4278357720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1899 (or 1892 counting only the distinct ones).

The product of its (nonzero) digits is 658560, while the sum is 45.

The square root of 4278357720 is about 65409.1562397804. The cubic root of 4278357720 is about 1623.4005842309.

The spelling of 4278357720 in words is "four billion, two hundred seventy-eight million, three hundred fifty-seven thousand, seven hundred twenty".