428030719 has 2 divisors, whose sum is σ = 428030720. Its totient is φ = 428030718.

The previous prime is 428030699. The next prime is 428030741. The reversal of 428030719 is 917030824.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 428030719 - 2¹³ = 428022527 is a prime.

It is a super-2 number, since 2×428030719² = 366420592815313922, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428031719) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214015359 + 214015360.

It is an arithmetic number, because the mean of its divisors is an integer number (214015360).

Almost surely, 2^428030719 is an apocalyptic number.

428030719 is a deficient number, since it is larger than the sum of its proper divisors (1).

428030719 is an equidigital number, since it uses as much as digits as its factorization.

428030719 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 428030719 is about 20688.9032817112. The cubic root of 428030719 is about 753.6302336690.

The spelling of 428030719 in words is "four hundred twenty-eight million, thirty thousand, seven hundred nineteen".