4128728486 has 4 divisors (see below), whose sum is σ = 6193092732. Its totient is φ = 2064364242.

The previous prime is 4128728449. The next prime is 4128728497. The reversal of 4128728486 is 6848278214.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×4128728486² = 34092797822215704392, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1032182120 + ... + 1032182123.

It is an arithmetic number, because the mean of its divisors is an integer number (1548273183).

Almost surely, 2^4128728486 is an apocalyptic number.

4128728486 is a deficient number, since it is larger than the sum of its proper divisors (2064364246).

4128728486 is a wasteful number, since it uses less digits than its factorization.

4128728486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2064364245.

The product of its digits is 1376256, while the sum is 50.

The square root of 4128728486 is about 64255.1825614090. The cubic root of 4128728486 is about 1604.2502213789.

It can be divided in two parts, 4128728 and 486, that added together give a palindrome (4129214).

The spelling of 4128728486 in words is "four billion, one hundred twenty-eight million, seven hundred twenty-eight thousand, four hundred eighty-six".