22501424 has 20 divisors (see below), whose sum is σ = 47560200. Its totient is φ = 10227840.

The previous prime is 22501403. The next prime is 22501441. The reversal of 22501424 is 42410522.

It is a happy number.

It is a super-3 number, since 3×22501424³ (a number of 23 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22501396 and 22501405.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63749 + ... + 64100.

It is an arithmetic number, because the mean of its divisors is an integer number (2378010).

Almost surely, 2^22501424 is an apocalyptic number.

It is an amenable number.

22501424 is an abundant number, since it is smaller than the sum of its proper divisors (25058776).

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

22501424 is a wasteful number, since it uses less digits than its factorization.

22501424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127868 (or 127862 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 20.

The square root of 22501424 is about 4743.5665906573. The cubic root of 22501424 is about 282.3167642511.

Adding to 22501424 its reverse (42410522), we get a palindrome (64911946).

The spelling of 22501424 in words is "twenty-two million, five hundred one thousand, four hundred twenty-four".