220484391 has 8 divisors (see below), whose sum is σ = 294155760. Its totient is φ = 146901312.

The previous prime is 220484377. The next prime is 220484413. The reversal of 220484391 is 193484022.

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

It is not a de Polignac number, because 220484391 - 2¹¹ = 220482343 is a prime.

It is a super-2 number, since 2×220484391² = 97226733349281762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220484351) 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 7 ways as a sum of consecutive naturals, for example, 16006 + ... + 26403.

It is an arithmetic number, because the mean of its divisors is an integer number (36769470).

Almost surely, 2^220484391 is an apocalyptic number.

220484391 is a deficient number, since it is larger than the sum of its proper divisors (73671369).

220484391 is a wasteful number, since it uses less digits than its factorization.

220484391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44145.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 220484391 is about 14848.7168132469. The cubic root of 220484391 is about 604.1238059953.

The spelling of 220484391 in words is "two hundred twenty million, four hundred eighty-four thousand, three hundred ninety-one".