222402154 has 8 divisors (see below), whose sum is σ = 359265060. Its totient is φ = 102647136.

The previous prime is 222402107. The next prime is 222402161. The reversal of 222402154 is 451204222.

It can be written as a sum of positive squares in 2 ways, for example, as 216531225 + 5870929 = 14715^2 + 2423^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4276939 + ... + 4276990.

Almost surely, 2^222402154 is an apocalyptic number.

222402154 is a deficient number, since it is larger than the sum of its proper divisors (136862906).

222402154 is a wasteful number, since it uses less digits than its factorization.

222402154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8553944.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 222402154 is about 14913.1537241457. The cubic root of 222402154 is about 605.8702990440.

Adding to 222402154 its reverse (451204222), we get a palindrome (673606376).

The spelling of 222402154 in words is "two hundred twenty-two million, four hundred two thousand, one hundred fifty-four".