2808428231 has 8 divisors (see below), whose sum is σ = 3218380800. Its totient is φ = 2400662808.

The previous prime is 2808428221. The next prime is 2808428239. The reversal of 2808428231 is 1328248082.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2808428231 - 2¹⁰ = 2808427207 is a prime.

It is a super-2 number, since 2×2808428231² = 15774538257355578722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2808428239) 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, 544031 + ... + 549168.

It is an arithmetic number, because the mean of its divisors is an integer number (402297600).

Almost surely, 2^2808428231 is an apocalyptic number.

2808428231 is a deficient number, since it is larger than the sum of its proper divisors (409952569).

2808428231 is a wasteful number, since it uses less digits than its factorization.

2808428231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093573.

The product of its (nonzero) digits is 49152, while the sum is 38.

The square root of 2808428231 is about 52994.6056783141. The cubic root of 2808428231 is about 1410.8725265372.

The spelling of 2808428231 in words is "two billion, eight hundred eight million, four hundred twenty-eight thousand, two hundred thirty-one".