428028743 has 2 divisors, whose sum is σ = 428028744. Its totient is φ = 428028742.

The previous prime is 428028701. The next prime is 428028779. The reversal of 428028743 is 347820824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428028743 - 2²⁶ = 360919879 is a prime.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 428028697 and 428028706.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428028793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214014371 + 214014372.

It is an arithmetic number, because the mean of its divisors is an integer number (214014372).

Almost surely, 2^428028743 is an apocalyptic number.

428028743 is a deficient number, since it is larger than the sum of its proper divisors (1).

428028743 is an equidigital number, since it uses as much as digits as its factorization.

428028743 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 86016, while the sum is 38.

The square root of 428028743 is about 20688.8555265873. The cubic root of 428028743 is about 753.6290739582.

The spelling of 428028743 in words is "four hundred twenty-eight million, twenty-eight thousand, seven hundred forty-three".