4278617328 has 40 divisors (see below), whose sum is σ = 11177298000. Its totient is φ = 1410179584.

The previous prime is 4278617323. The next prime is 4278617333. The reversal of 4278617328 is 8237168724.

4278617328 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (4278617323) and next prime (4278617333).

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4278617323) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 496503 + ... + 505046.

It is an arithmetic number, because the mean of its divisors is an integer number (279432450).

Almost surely, 2^4278617328 is an apocalyptic number.

4278617328 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4278617328 is an abundant number, since it is smaller than the sum of its proper divisors (6898680672).

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

4278617328 is a wasteful number, since it uses less digits than its factorization.

4278617328 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1001649 (or 1001643 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The square root of 4278617328 is about 65411.1407024828. The cubic root of 4278617328 is about 1623.4334192018.

The spelling of 4278617328 in words is "four billion, two hundred seventy-eight million, six hundred seventeen thousand, three hundred twenty-eight".