428065820269 has 8 divisors (see below), whose sum is σ = 446685762240. Its totient is φ = 409446577056.

The previous prime is 428065820191. The next prime is 428065820279. The reversal of 428065820269 is 962028560824.

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 428065820269 - 2⁷ = 428065820141 is a prime.

It is a super-2 number, since 2×428065820269² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428065820279) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1366617 + ... + 1650385.

It is an arithmetic number, because the mean of its divisors is an integer number (55835720280).

Almost surely, 2^428065820269 is an apocalyptic number.

It is an amenable number.

428065820269 is a deficient number, since it is larger than the sum of its proper divisors (18619941971).

428065820269 is a wasteful number, since it uses less digits than its factorization.

428065820269 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349379.

The product of its (nonzero) digits is 3317760, while the sum is 52.

The spelling of 428065820269 in words is "four hundred twenty-eight billion, sixty-five million, eight hundred twenty thousand, two hundred sixty-nine".