1223528001424 has 135 divisors (see below), whose sum is σ = 2491687867473. Its totient is φ = 582020111232.

The previous prime is 1223528001403. The next prime is 1223528001439. The reversal of 1223528001424 is 4241008253221.

The square root of 1223528001424 is 1106132.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 852793147024 + 370734854400 = 923468^2 + 608880^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1223528001424.

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 11225027482 + ... + 11225027590.

Almost surely, 2^{1223528001424} is an apocalyptic number.

1223528001424 is the 1106132-nd square number.

It is an amenable number.

1223528001424 is an abundant number, since it is smaller than the sum of its proper divisors (1268159866049).

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

1223528001424 is an frugal number, since it uses more digits than its factorization.

1223528001424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430 (or 213 counting only the distinct ones).

The product of its (nonzero) digits is 30720, while the sum is 34.

The spelling of 1223528001424 in words is "one trillion, two hundred twenty-three billion, five hundred twenty-eight million, one thousand, four hundred twenty-four".