20028358 has 12 divisors (see below), whose sum is σ = 34947612. Its totient is φ = 8583540.

The previous prime is 20028347. The next prime is 20028389. The reversal of 20028358 is 85382002.

It is a super-2 number, since 2×20028358² = 802270248352328, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 102088 + ... + 102283.

It is an arithmetic number, because the mean of its divisors is an integer number (2912301).

Almost surely, 2^20028358 is an apocalyptic number.

20028358 is a deficient number, since it is larger than the sum of its proper divisors (14919254).

20028358 is a wasteful number, since it uses less digits than its factorization.

20028358 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204387 (or 204380 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 20028358 is about 4475.3053527106. The cubic root of 20028358 is about 271.5699934966.

The spelling of 20028358 in words is "twenty million, twenty-eight thousand, three hundred fifty-eight".