222421248 has 144 divisors (see below), whose sum is σ = 751864960. Its totient is φ = 63535104.

The previous prime is 222421237. The next prime is 222421289. The reversal of 222421248 is 842124222.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a nude number because it is divisible by every one of its digits.

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, 46086 + ... + 50682.

Almost surely, 2^222421248 is an apocalyptic number.

222421248 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222421248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (375932480).

222421248 is an abundant number, since it is smaller than the sum of its proper divisors (529443712).

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

222421248 is an equidigital number, since it uses as much as digits as its factorization.

222421248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629 (or 4609 counting only the distinct ones).

The product of its digits is 4096, while the sum is 27.

The square root of 222421248 is about 14913.7938835160. The cubic root of 222421248 is about 605.8876372400.

The spelling of 222421248 in words is "two hundred twenty-two million, four hundred twenty-one thousand, two hundred forty-eight".