20003240220 has 48 divisors (see below), whose sum is σ = 56109721248. Its totient is φ = 5324611840.

The previous prime is 20003240177. The next prime is 20003240233. The reversal of 20003240220 is 2204230002.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a self number, because there is not a number n which added to its sum of digits gives 20003240220.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265851 + ... + 332690.

It is an arithmetic number, because the mean of its divisors is an integer number (1168952526).

Almost surely, 2^20003240220 is an apocalyptic number.

20003240220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20003240220 is an abundant number, since it is smaller than the sum of its proper divisors (36106481028).

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

20003240220 is a wasteful number, since it uses less digits than its factorization.

20003240220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 599110 (or 599108 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 20003240220 its reverse (2204230002), we get a palindrome (22207470222).

The spelling of 20003240220 in words is "twenty billion, three million, two hundred forty thousand, two hundred twenty".