2028891275 has 6 divisors (see below), whose sum is σ = 2515825212. Its totient is φ = 1623113000.

The previous prime is 2028891257. The next prime is 2028891283. The reversal of 2028891275 is 5721988202.

It is not a de Polignac number, because 2028891275 - 2⁶ = 2028891211 is a prime.

It is a super-2 number, since 2×2028891275² = 8232799611542251250, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 40577801 + ... + 40577850.

It is an arithmetic number, because the mean of its divisors is an integer number (419304202).

Almost surely, 2^2028891275 is an apocalyptic number.

2028891275 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

2028891275 is a deficient number, since it is larger than the sum of its proper divisors (486933937).

2028891275 is an equidigital number, since it uses as much as digits as its factorization.

2028891275 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81155661 (or 81155656 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 2028891275 is about 45043.2156378738. The cubic root of 2028891275 is about 1265.9588568214.

The spelling of 2028891275 in words is "two billion, twenty-eight million, eight hundred ninety-one thousand, two hundred seventy-five".