4278075720 has 128 divisors (see below), whose sum is σ = 13569379200. Its totient is φ = 1076004864.

The previous prime is 4278075691. The next prime is 4278075731. The reversal of 4278075720 is 275708724.

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, 527214 + ... + 535266.

It is an arithmetic number, because the mean of its divisors is an integer number (106010775).

Almost surely, 2^4278075720 is an apocalyptic number.

4278075720 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 4278075720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6784689600).

4278075720 is an abundant number, since it is smaller than the sum of its proper divisors (9291303480).

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

4278075720 is a wasteful number, since it uses less digits than its factorization.

4278075720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8319 (or 8315 counting only the distinct ones).

The product of its (nonzero) digits is 219520, while the sum is 42.

The square root of 4278075720 is about 65407.0005427554. Note that the first 3 decimals coincide. The cubic root of 4278075720 is about 1623.3649156361.

The spelling of 4278075720 in words is "four billion, two hundred seventy-eight million, seventy-five thousand, seven hundred twenty".