20406022224 has 80 divisors (see below), whose sum is σ = 60842951040. Its totient is φ = 5772556800.

The previous prime is 20406022213. The next prime is 20406022271. The reversal of 20406022224 is 42222060402.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a junction number, because it is equal to n+sod(n) for n = 20406022194 and 20406022203.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 266719 + ... + 334590.

It is an arithmetic number, because the mean of its divisors is an integer number (760536888).

Almost surely, 2^20406022224 is an apocalyptic number.

20406022224 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20406022224 is an abundant number, since it is smaller than the sum of its proper divisors (40436928816).

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

20406022224 is a wasteful number, since it uses less digits than its factorization.

20406022224 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 601428 (or 601422 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 20406022224 its reverse (42222060402), we get a palindrome (62628082626).

The spelling of 20406022224 in words is "twenty billion, four hundred six million, twenty-two thousand, two hundred twenty-four".