20038182220 has 24 divisors (see below), whose sum is σ = 48091637664. Its totient is φ = 6870233856.

The previous prime is 20038182187. The next prime is 20038182221. The reversal of 20038182220 is 2228183002.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (20038182221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 71564797 + ... + 71565076.

It is an arithmetic number, because the mean of its divisors is an integer number (2003818236).

Almost surely, 2^20038182220 is an apocalyptic number.

20038182220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20038182220 is an abundant number, since it is smaller than the sum of its proper divisors (28053455444).

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

20038182220 is a wasteful number, since it uses less digits than its factorization.

20038182220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143129889 (or 143129887 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 28.

The spelling of 20038182220 in words is "twenty billion, thirty-eight million, one hundred eighty-two thousand, two hundred twenty".