220361556 has 24 divisors (see below), whose sum is σ = 514425184. Its totient is φ = 73418400.

The previous prime is 220361549. The next prime is 220361569. The reversal of 220361556 is 655163022.

It is a super-2 number, since 2×220361556² = 97118430725482272, which contains 22 as substring.

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 7 ways as a sum of consecutive naturals, for example, 36831 + ... + 42393.

Almost surely, 2^220361556 is an apocalyptic number.

It is an amenable number.

220361556 is an abundant number, since it is smaller than the sum of its proper divisors (294063628).

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

220361556 is a wasteful number, since it uses less digits than its factorization.

220361556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8871 (or 8869 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The square root of 220361556 is about 14844.5800210043. The cubic root of 220361556 is about 604.0115964909.

The spelling of 220361556 in words is "two hundred twenty million, three hundred sixty-one thousand, five hundred fifty-six".