2028857493 has 16 divisors (see below), whose sum is σ = 2928030336. Its totient is φ = 1242185280.

The previous prime is 2028857491. The next prime is 2028857513. The reversal of 2028857493 is 3947588202.

It is not a de Polignac number, because 2028857493 - 2¹ = 2028857491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2028857491) 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, 124353 + ... + 139718.

It is an arithmetic number, because the mean of its divisors is an integer number (183001896).

Almost surely, 2^2028857493 is an apocalyptic number.

It is an amenable number.

2028857493 is a deficient number, since it is larger than the sum of its proper divisors (899172843).

2028857493 is a wasteful number, since it uses less digits than its factorization.

2028857493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264284.

The product of its (nonzero) digits is 967680, while the sum is 48.

The square root of 2028857493 is about 45042.8406408832. The cubic root of 2028857493 is about 1265.9518305110.

The spelling of 2028857493 in words is "two billion, twenty-eight million, eight hundred fifty-seven thousand, four hundred ninety-three".