1228428417 has 8 divisors (see below), whose sum is σ = 1638645696. Its totient is φ = 818581712.

The previous prime is 1228428391. The next prime is 1228428419. The reversal of 1228428417 is 7148248221.

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

It is a cyclic number.

It is not a de Polignac number, because 1228428417 - 2⁶ = 1228428353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1228428419) 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 in 7 ways as a sum of consecutive naturals, for example, 84813 + ... + 98234.

It is an arithmetic number, because the mean of its divisors is an integer number (204830712).

Almost surely, 2^1228428417 is an apocalyptic number.

It is an amenable number.

1228428417 is a deficient number, since it is larger than the sum of its proper divisors (410217279).

1228428417 is a wasteful number, since it uses less digits than its factorization.

1228428417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185287.

The product of its digits is 57344, while the sum is 39.

The square root of 1228428417 is about 35048.9431652368. The cubic root of 1228428417 is about 1070.9847448790.

The spelling of 1228428417 in words is "one billion, two hundred twenty-eight million, four hundred twenty-eight thousand, four hundred seventeen".