20224020440 has 48 divisors (see below), whose sum is σ = 49273628400. Its totient is φ = 7467328128.

The previous prime is 20224020433. The next prime is 20224020463. The reversal of 20224020440 is 4402042202.

It is a super-2 number, since 2×20224020440² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1489100 + ... + 1502619.

It is an arithmetic number, because the mean of its divisors is an integer number (1026533925).

Almost surely, 2^20224020440 is an apocalyptic number.

20224020440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20224020440 is an abundant number, since it is smaller than the sum of its proper divisors (29049607960).

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

20224020440 is a wasteful number, since it uses less digits than its factorization.

20224020440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2991756 (or 2991739 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 20224020440 its reverse (4402042202), we get a palindrome (24626062642).

The spelling of 20224020440 in words is "twenty billion, two hundred twenty-four million, twenty thousand, four hundred forty".