220001424 has 40 divisors (see below), whose sum is σ = 587938560. Its totient is φ = 70804608.

The previous prime is 220001423. The next prime is 220001447. The reversal of 220001424 is 424100022.

It is not an unprimeable number, because it can be changed into a prime (220001423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77632 + ... + 80415.

It is an arithmetic number, because the mean of its divisors is an integer number (14698464).

Almost surely, 2^220001424 is an apocalyptic number.

220001424 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

220001424 is an abundant number, since it is smaller than the sum of its proper divisors (367937136).

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

220001424 is a wasteful number, since it uses less digits than its factorization.

220001424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158087 (or 158081 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 15.

The square root of 220001424 is about 14832.4449771439. Note that the first 3 decimals coincide. The cubic root of 220001424 is about 603.6823761646.

Adding to 220001424 its reverse (424100022), we get a palindrome (644101446).

The spelling of 220001424 in words is "two hundred twenty million, one thousand, four hundred twenty-four".