20222442440 has 16 divisors (see below), whose sum is σ = 45500495580. Its totient is φ = 8088976960.

The previous prime is 20222442419. The next prime is 20222442473. The reversal of 20222442440 is 4424422202.

It can be written as a sum of positive squares in 2 ways, for example, as 19259333284 + 963109156 = 138778^2 + 31034^2 .

It is a super-2 number, since 2×20222442440² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 252780491 + ... + 252780570.

Almost surely, 2^20222442440 is an apocalyptic number.

20222442440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20222442440 is an abundant number, since it is smaller than the sum of its proper divisors (25278053140).

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

20222442440 is a wasteful number, since it uses less digits than its factorization.

20222442440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 505561072 (or 505561068 counting only the distinct ones).

The product of its (nonzero) digits is 8192, while the sum is 26.

Adding to 20222442440 its reverse (4424422202), we get a palindrome (24646864642).

The spelling of 20222442440 in words is "twenty billion, two hundred twenty-two million, four hundred forty-two thousand, four hundred forty".