2028434785 has 32 divisors (see below), whose sum is σ = 2656241280. Its totient is φ = 1478131200.

The previous prime is 2028434773. The next prime is 2028434797. The reversal of 2028434785 is 5874348202.

It is an interprime number because it is at equal distance from previous prime (2028434773) and next prime (2028434797).

It is not a de Polignac number, because 2028434785 - 2⁵ = 2028434753 is a prime.

It is a super-2 number, since 2×2028434785² = 8229095353995992450, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1796101 + ... + 1797229.

It is an arithmetic number, because the mean of its divisors is an integer number (83007540).

Almost surely, 2^2028434785 is an apocalyptic number.

It is an amenable number.

2028434785 is a deficient number, since it is larger than the sum of its proper divisors (627806495).

2028434785 is a wasteful number, since it uses less digits than its factorization.

2028434785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1489.

The product of its (nonzero) digits is 430080, while the sum is 43.

The square root of 2028434785 is about 45038.1481080206. The cubic root of 2028434785 is about 1265.8639049771.

The spelling of 2028434785 in words is "two billion, twenty-eight million, four hundred thirty-four thousand, seven hundred eighty-five".