220345454 has 12 divisors (see below), whose sum is σ = 384480504. Its totient is φ = 94433724.

The previous prime is 220345453. The next prime is 220345507. The reversal of 220345454 is 454543022.

It is a super-2 number, since 2×220345454² = 97104238196932232, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220345453) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 1124114 + ... + 1124309.

It is an arithmetic number, because the mean of its divisors is an integer number (32040042).

Almost surely, 2^220345454 is an apocalyptic number.

220345454 is a deficient number, since it is larger than the sum of its proper divisors (164135050).

220345454 is a wasteful number, since it uses less digits than its factorization.

220345454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2248439 (or 2248432 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 29.

The square root of 220345454 is about 14844.0376582654. The cubic root of 220345454 is about 603.9968842580.

Adding to 220345454 its reverse (454543022), we get a palindrome (674888476).

The spelling of 220345454 in words is "two hundred twenty million, three hundred forty-five thousand, four hundred fifty-four".