20220233440 has 48 divisors (see below), whose sum is σ = 52113060720. Its totient is φ = 7352811520.

The previous prime is 20220233419. The next prime is 20220233503. The reversal of 20220233440 is 4433202202.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5742625 + ... + 5746144.

It is an arithmetic number, because the mean of its divisors is an integer number (1085688765).

Almost surely, 2^20220233440 is an apocalyptic number.

20220233440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20220233440 is an abundant number, since it is smaller than the sum of its proper divisors (31892827280).

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

20220233440 is a wasteful number, since it uses less digits than its factorization.

20220233440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11488795 (or 11488787 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 22.

Adding to 20220233440 its reverse (4433202202), we get a palindrome (24653435642).

The spelling of 20220233440 in words is "twenty billion, two hundred twenty million, two hundred thirty-three thousand, four hundred forty".