224618820 has 24 divisors (see below), whose sum is σ = 628932864. Its totient is φ = 59898336.

The previous prime is 224618819. The next prime is 224618837. The reversal of 224618820 is 28816422.

It is a happy number.

It is a super-2 number, since 2×224618820² = 100907228596384800, which contains 22 as substring.

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, 1871764 + ... + 1871883.

It is an arithmetic number, because the mean of its divisors is an integer number (26205536).

Almost surely, 2^224618820 is an apocalyptic number.

224618820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

224618820 is an abundant number, since it is smaller than the sum of its proper divisors (404314044).

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

224618820 is a wasteful number, since it uses less digits than its factorization.

224618820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3743659 (or 3743657 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 33.

The square root of 224618820 is about 14987.2886140222. The cubic root of 224618820 is about 607.8765367093.

The spelling of 224618820 in words is "two hundred twenty-four million, six hundred eighteen thousand, eight hundred twenty".