20288058 has 48 divisors (see below), whose sum is σ = 47617344. Its totient is φ = 5745600.

The previous prime is 20288053. The next prime is 20288063. The reversal of 20288058 is 85088202.

It is an interprime number because it is at equal distance from previous prime (20288053) and next prime (20288063).

It is a super-3 number, since 3×20288058³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (20288053) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44166 + ... + 44622.

It is an arithmetic number, because the mean of its divisors is an integer number (992028).

Almost surely, 2^20288058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20288058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (23808672).

20288058 is an abundant number, since it is smaller than the sum of its proper divisors (27329286).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20288058 is a wasteful number, since it uses less digits than its factorization.

20288058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 627 (or 620 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 33.

The square root of 20288058 is about 4504.2266816847. The cubic root of 20288058 is about 272.7387375584.

The spelling of 20288058 in words is "twenty million, two hundred eighty-eight thousand, fifty-eight".