220828424 has 8 divisors (see below), whose sum is σ = 414053310. Its totient is φ = 110414208.

The previous prime is 220828423. The next prime is 220828427. The reversal of 220828424 is 424828022.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 202492900 + 18335524 = 14230^2 + 4282^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (220828423) 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, 13801769 + ... + 13801784.

Almost surely, 2^220828424 is an apocalyptic number.

It is an amenable number.

220828424 is a deficient number, since it is larger than the sum of its proper divisors (193224886).

220828424 is a wasteful number, since it uses less digits than its factorization.

220828424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27603559 (or 27603555 counting only the distinct ones).

The product of its (nonzero) digits is 16384, while the sum is 32.

The square root of 220828424 is about 14860.2969014754. The cubic root of 220828424 is about 604.4378577333.

The spelling of 220828424 in words is "two hundred twenty million, eight hundred twenty-eight thousand, four hundred twenty-four".