4293865728 has 90 divisors (see below), whose sum is σ = 12803592494. Its totient is φ = 1431281664.

The previous prime is 4293865711. The next prime is 4293865739. The reversal of 4293865728 is 8275683924.

It can be written as a sum of positive squares in only one way, i.e., 3869835264 + 424030464 = 62208^2 + 20592^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 82801 + ... + 124272.

Almost surely, 2^4293865728 is an apocalyptic number.

4293865728 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

4293865728 is an abundant number, since it is smaller than the sum of its proper divisors (8509726766).

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

4293865728 is an equidigital number, since it uses as much as digits as its factorization.

4293865728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 207101 (or 207078 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 54.

The square root of 4293865728 is about 65527.5951641749. The cubic root of 4293865728 is about 1625.3596966902.

The spelling of 4293865728 in words is "four billion, two hundred ninety-three million, eight hundred sixty-five thousand, seven hundred twenty-eight".