428235733 has 2 divisors, whose sum is σ = 428235734. Its totient is φ = 428235732.

The previous prime is 428235649. The next prime is 428235749. The reversal of 428235733 is 337532824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 418488849 + 9746884 = 20457^2 + 3122^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428235733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 428235692 and 428235701.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428235133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214117866 + 214117867.

It is an arithmetic number, because the mean of its divisors is an integer number (214117867).

Almost surely, 2^428235733 is an apocalyptic number.

It is an amenable number.

428235733 is a deficient number, since it is larger than the sum of its proper divisors (1).

428235733 is an equidigital number, since it uses as much as digits as its factorization.

428235733 is an evil number, because the sum of its binary digits is even.

The product of its digits is 120960, while the sum is 37.

The square root of 428235733 is about 20693.8573736266. The cubic root of 428235733 is about 753.7505366292.

The spelling of 428235733 in words is "four hundred twenty-eight million, two hundred thirty-five thousand, seven hundred thirty-three".