20408058 has 128 divisors (see below), whose sum is σ = 54743040. Its totient is φ = 5564160.

The previous prime is 20408051. The next prime is 20408077. The reversal of 20408058 is 85080402.

It is a super-3 number, since 3×20408058³ (a number of 23 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (20408051) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 434191 + ... + 434237.

It is an arithmetic number, because the mean of its divisors is an integer number (427680).

Almost surely, 2^20408058 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20408058, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27371520).

20408058 is an abundant number, since it is smaller than the sum of its proper divisors (34334982).

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

20408058 is a wasteful number, since it uses less digits than its factorization.

20408058 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129 (or 123 counting only the distinct ones).

The product of its (nonzero) digits is 2560, while the sum is 27.

The square root of 20408058 is about 4517.5278637768. The cubic root of 20408058 is about 273.2754134001.

The spelling of 20408058 in words is "twenty million, four hundred eight thousand, fifty-eight".