428724047 has 2 divisors, whose sum is σ = 428724048. Its totient is φ = 428724046.

The previous prime is 428724041. The next prime is 428724053. The reversal of 428724047 is 740427824.

It is a balanced prime because it is at equal distance from previous prime (428724041) and next prime (428724053).

It is a cyclic number.

It is not a de Polignac number, because 428724047 - 2⁶ = 428723983 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428724047.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (428724041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214362023 + 214362024.

It is an arithmetic number, because the mean of its divisors is an integer number (214362024).

Almost surely, 2^428724047 is an apocalyptic number.

428724047 is a deficient number, since it is larger than the sum of its proper divisors (1).

428724047 is an equidigital number, since it uses as much as digits as its factorization.

428724047 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 100352, while the sum is 38.

The square root of 428724047 is about 20705.6525374111. The cubic root of 428724047 is about 754.0369264984.

The spelling of 428724047 in words is "four hundred twenty-eight million, seven hundred twenty-four thousand, forty-seven".