428233361 has 4 divisors (see below), whose sum is σ = 428292900. Its totient is φ = 428173824.

The previous prime is 428233331. The next prime is 428233363. The reversal of 428233361 is 163332824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 154132225 + 274101136 = 12415^2 + 16556^2 .

It is a cyclic number.

It is not a de Polignac number, because 428233361 - 2¹⁴ = 428216977 is a prime.

It is a super-2 number, since 2×428233361² = 366767622946712642, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428233363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17216 + ... + 33953.

It is an arithmetic number, because the mean of its divisors is an integer number (107073225).

Almost surely, 2^428233361 is an apocalyptic number.

It is an amenable number.

428233361 is a deficient number, since it is larger than the sum of its proper divisors (59539).

428233361 is an equidigital number, since it uses as much as digits as its factorization.

428233361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59538.

The product of its digits is 20736, while the sum is 32.

The square root of 428233361 is about 20693.8000618543. The cubic root of 428233361 is about 753.7491449505.

The spelling of 428233361 in words is "four hundred twenty-eight million, two hundred thirty-three thousand, three hundred sixty-one".