1212628443 has 8 divisors (see below), whose sum is σ = 1741210128. Its totient is φ = 746232864.

The previous prime is 1212628441. The next prime is 1212628453. The reversal of 1212628443 is 3448262121.

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

It is not a de Polignac number, because 1212628443 - 2¹ = 1212628441 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1212628441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15546480 + ... + 15546557.

It is an arithmetic number, because the mean of its divisors is an integer number (217651266).

Almost surely, 2^1212628443 is an apocalyptic number.

1212628443 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1212628443 is a deficient number, since it is larger than the sum of its proper divisors (528581685).

1212628443 is a wasteful number, since it uses less digits than its factorization.

1212628443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31093053.

The product of its digits is 18432, while the sum is 33.

The square root of 1212628443 is about 34822.8149781146. The cubic root of 1212628443 is about 1066.3732695769.

The spelling of 1212628443 in words is "one billion, two hundred twelve million, six hundred twenty-eight thousand, four hundred forty-three".