428677751 has 2 divisors, whose sum is σ = 428677752. Its totient is φ = 428677750.

The previous prime is 428677699. The next prime is 428677759. The reversal of 428677751 is 157776824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 428677751 - 2⁶ = 428677687 is a prime.

It is a super-2 number, since 2×428677751² = 367529228404836002, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 428677696 and 428677705.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428677759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214338875 + 214338876.

It is an arithmetic number, because the mean of its divisors is an integer number (214338876).

Almost surely, 2^428677751 is an apocalyptic number.

428677751 is a deficient number, since it is larger than the sum of its proper divisors (1).

428677751 is an equidigital number, since it uses as much as digits as its factorization.

428677751 is an evil number, because the sum of its binary digits is even.

The product of its digits is 658560, while the sum is 47.

The square root of 428677751 is about 20704.5345516387. The cubic root of 428677751 is about 754.0097838252.

The spelling of 428677751 in words is "four hundred twenty-eight million, six hundred seventy-seven thousand, seven hundred fifty-one".