220451356 has 12 divisors (see below), whose sum is σ = 388101168. Its totient is φ = 109565312.

The previous prime is 220451347. The next prime is 220451381. The reversal of 220451356 is 653154022.

It is a congruent number.

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, 164341 + ... + 165676.

It is an arithmetic number, because the mean of its divisors is an integer number (32341764).

Almost surely, 2^220451356 is an apocalyptic number.

It is an amenable number.

220451356 is a deficient number, since it is larger than the sum of its proper divisors (167649812).

220451356 is a wasteful number, since it uses less digits than its factorization.

220451356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330188 (or 330186 counting only the distinct ones).

The product of its (nonzero) digits is 7200, while the sum is 28.

The square root of 220451356 is about 14847.6043858934. The cubic root of 220451356 is about 604.0936326927.

The spelling of 220451356 in words is "two hundred twenty million, four hundred fifty-one thousand, three hundred fifty-six".