4028821247 has 16 divisors (see below), whose sum is σ = 4492357632. Its totient is φ = 3581629920.

The previous prime is 4028821213. The next prime is 4028821273. The reversal of 4028821247 is 7421288204.

It is not a de Polignac number, because 4028821247 - 2¹⁰ = 4028820223 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 4028821247.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028823247) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 807653 + ... + 812625.

It is an arithmetic number, because the mean of its divisors is an integer number (280772352).

Almost surely, 2^4028821247 is an apocalyptic number.

4028821247 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

4028821247 is a deficient number, since it is larger than the sum of its proper divisors (463536385).

4028821247 is a wasteful number, since it uses less digits than its factorization.

4028821247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6598.

The product of its (nonzero) digits is 57344, while the sum is 38.

The square root of 4028821247 is about 63472.9962031099. The cubic root of 4028821247 is about 1591.2045046723.

The spelling of 4028821247 in words is "four billion, twenty-eight million, eight hundred twenty-one thousand, two hundred forty-seven".