428051707 has 2 divisors, whose sum is σ = 428051708. Its totient is φ = 428051706.

The previous prime is 428051669. The next prime is 428051711. The reversal of 428051707 is 707150824.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-428051707 is a prime.

It is a super-2 number, since 2×428051707² = 366456527731227698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (428051737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214025853 + 214025854.

It is an arithmetic number, because the mean of its divisors is an integer number (214025854).

Almost surely, 2^428051707 is an apocalyptic number.

428051707 is a deficient number, since it is larger than the sum of its proper divisors (1).

428051707 is an equidigital number, since it uses as much as digits as its factorization.

428051707 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15680, while the sum is 34.

The square root of 428051707 is about 20689.4105039269. The cubic root of 428051707 is about 753.6425512685.

The spelling of 428051707 in words is "four hundred twenty-eight million, fifty-one thousand, seven hundred seven".