20228000442 has 32 divisors (see below), whose sum is σ = 43603429632. Its totient is φ = 6218938944.

The previous prime is 20228000413. The next prime is 20228000473. The reversal of 20228000442 is 24400082202.

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, 8338 + ... + 201309.

It is an arithmetic number, because the mean of its divisors is an integer number (1362607176).

Almost surely, 2^20228000442 is an apocalyptic number.

20228000442 is an abundant number, since it is smaller than the sum of its proper divisors (23375429190).

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

20228000442 is a wasteful number, since it uses less digits than its factorization.

20228000442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210902.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 20228000442 its reverse (24400082202), we get a palindrome (44628082644).

The spelling of 20228000442 in words is "twenty billion, two hundred twenty-eight million, four hundred forty-two", and thus it is an aban number.