220243154 has 4 divisors (see below), whose sum is σ = 330364734. Its totient is φ = 110121576.

The previous prime is 220243099. The next prime is 220243159. The reversal of 220243154 is 451342022.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 219839929 + 403225 = 14827^2 + 635^2 .

It is not an unprimeable number, because it can be changed into a prime (220243159) by changing a digit.

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 as a sum of consecutive naturals, namely, 55060787 + ... + 55060790.

Almost surely, 2^220243154 is an apocalyptic number.

220243154 is a deficient number, since it is larger than the sum of its proper divisors (110121580).

220243154 is a wasteful number, since it uses less digits than its factorization.

220243154 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110121579.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 220243154 is about 14840.5914302631. The cubic root of 220243154 is about 603.9033970468.

Adding to 220243154 its reverse (451342022), we get a palindrome (671585176).

The spelling of 220243154 in words is "two hundred twenty million, two hundred forty-three thousand, one hundred fifty-four".