2028458 has 4 divisors (see below), whose sum is σ = 3042690. Its totient is φ = 1014228.

The previous prime is 2028443. The next prime is 2028461. The reversal of 2028458 is 8548202.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1283689 + 744769 = 1133^2 + 863^2 .

It is a super-2 number, since 2×2028458² = 8229283715528, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2028458.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 507113 + ... + 507116.

2^2028458 is an apocalyptic number.

2028458 is a deficient number, since it is larger than the sum of its proper divisors (1014232).

2028458 is a wasteful number, since it uses less digits than its factorization.

2028458 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1014231.

The product of its (nonzero) digits is 5120, while the sum is 29.

The square root of 2028458 is about 1424.2394461607. The cubic root of 2028458 is about 126.5868734139.

The spelling of 2028458 in words is "two million, twenty-eight thousand, four hundred fifty-eight".