1220838224 has 20 divisors (see below), whose sum is σ = 2368366644. Its totient is φ = 609646848.

The previous prime is 1220838197. The next prime is 1220838287. The reversal of 1220838224 is 4228380221.

It can be written as a sum of positive squares in 2 ways, for example, as 987970624 + 232867600 = 31432^2 + 15260^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35117 + ... + 60620.

Almost surely, 2^1220838224 is an apocalyptic number.

It is an amenable number.

1220838224 is a deficient number, since it is larger than the sum of its proper divisors (1147528420).

1220838224 is an equidigital number, since it uses as much as digits as its factorization.

1220838224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96542 (or 96536 counting only the distinct ones).

The product of its (nonzero) digits is 12288, while the sum is 32.

The square root of 1220838224 is about 34940.4954744491. The cubic root of 1220838224 is about 1068.7743919561.

The spelling of 1220838224 in words is "one billion, two hundred twenty million, eight hundred thirty-eight thousand, two hundred twenty-four".