428212223 has 8 divisors (see below), whose sum is σ = 434261520. Its totient is φ = 422196480.

The previous prime is 428212171. The next prime is 428212243. The reversal of 428212223 is 322212824.

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 428212223 - 2¹⁸ = 427950079 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 428212192 and 428212201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428212243) 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, 17888 + ... + 34298.

It is an arithmetic number, because the mean of its divisors is an integer number (54282690).

Almost surely, 2^428212223 is an apocalyptic number.

428212223 is a deficient number, since it is larger than the sum of its proper divisors (6049297).

428212223 is a wasteful number, since it uses less digits than its factorization.

428212223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16777.

The product of its digits is 3072, while the sum is 26.

The square root of 428212223 is about 20693.2893228699. The cubic root of 428212223 is about 753.7367428251.

The spelling of 428212223 in words is "four hundred twenty-eight million, two hundred twelve thousand, two hundred twenty-three".