20093550 has 48 divisors (see below), whose sum is σ = 50382192. Its totient is φ = 5299200.

The previous prime is 20093543. The next prime is 20093551. The reversal of 20093550 is 5539002.

It is a self number, because there is not a number n which added to its sum of digits gives 20093550.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20093551) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 13860 + ... + 15240.

It is an arithmetic number, because the mean of its divisors is an integer number (1049629).

Almost surely, 2^20093550 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20093550, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25191096).

20093550 is an abundant number, since it is smaller than the sum of its proper divisors (30288642).

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

20093550 is a wasteful number, since it uses less digits than its factorization.

20093550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1493 (or 1488 counting only the distinct ones).

The product of its (nonzero) digits is 1350, while the sum is 24.

The square root of 20093550 is about 4482.5829607493. The cubic root of 20093550 is about 271.8643264405.

The spelling of 20093550 in words is "twenty million, ninety-three thousand, five hundred fifty".