222551040 has 88 divisors (see below), whose sum is σ = 711864720. Its totient is φ = 59342848.

The previous prime is 222551039. The next prime is 222551051. The reversal of 222551040 is 40155222.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 222550998 and 222551016.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 8116 + ... + 22604.

Almost surely, 2^222551040 is an apocalyptic number.

222551040 is a gapful number since it is divisible by the number (20) 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 222551040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (355932360).

222551040 is an abundant number, since it is smaller than the sum of its proper divisors (489313680).

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

222551040 is a wasteful number, since it uses less digits than its factorization.

222551040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14517 (or 14499 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 21.

The square root of 222551040 is about 14918.1446567594. The cubic root of 222551040 is about 606.0054678242.

The spelling of 222551040 in words is "two hundred twenty-two million, five hundred fifty-one thousand, forty".