222409152 has 224 divisors, whose sum is σ = 759805440. Its totient is φ = 63265536.

The previous prime is 222409141. The next prime is 222409163. The reversal of 222409152 is 251904222.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (222409141) and next prime (222409163).

It is a tau number, because it is divible by the number of its divisors (224).

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

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 31 ways as a sum of consecutive naturals, for example, 979663 + ... + 979889.

Almost surely, 2^222409152 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222409152, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (379902720).

222409152 is an abundant number, since it is smaller than the sum of its proper divisors (537396288).

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

222409152 is an frugal number, since it uses more digits than its factorization.

222409152 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 267 (or 239 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 222409152 is about 14913.3883473877. The cubic root of 222409152 is about 605.8766536525.

The spelling of 222409152 in words is "two hundred twenty-two million, four hundred nine thousand, one hundred fifty-two".