2028577490 has 16 divisors (see below), whose sum is σ = 3689084952. Its totient is φ = 803065344.

The previous prime is 2028577489. The next prime is 2028577511. The reversal of 2028577490 is 947758202.

It can be written as a sum of positive squares in 4 ways, for example, as 1684363681 + 344213809 = 41041^2 + 18553^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1044689 + ... + 1046628.

Almost surely, 2^2028577490 is an apocalyptic number.

2028577490 is a deficient number, since it is larger than the sum of its proper divisors (1660507462).

2028577490 is a wasteful number, since it uses less digits than its factorization.

2028577490 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2091421.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 2028577490 is about 45039.7323482278. The cubic root of 2028577490 is about 1265.8935897491.

The spelling of 2028577490 in words is "two billion, twenty-eight million, five hundred seventy-seven thousand, four hundred ninety".