22240400424 has 64 divisors (see below), whose sum is σ = 61423488000. Its totient is φ = 6654198720.

The previous prime is 22240400389. The next prime is 22240400447. The reversal of 22240400424 is 42400404222.

It is a super-2 number, since 2×22240400424² (a number of 21 digits) contains 22 as substring.

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 = 22240400394 and 22240400403.

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, 512334 + ... + 554045.

It is an arithmetic number, because the mean of its divisors is an integer number (959742000).

Almost surely, 2^22240400424 is an apocalyptic number.

22240400424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

22240400424 is an abundant number, since it is smaller than the sum of its proper divisors (39183087576).

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

22240400424 is a wasteful number, since it uses less digits than its factorization.

22240400424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066478 (or 1066474 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 22240400424 its reverse (42400404222), we get a palindrome (64640804646).

The spelling of 22240400424 in words is "twenty-two billion, two hundred forty million, four hundred thousand, four hundred twenty-four".