428070737 has 2 divisors, whose sum is σ = 428070738. Its totient is φ = 428070736.

The previous prime is 428070677. The next prime is 428070739. The reversal of 428070737 is 737070824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 407676481 + 20394256 = 20191^2 + 4516^2 .

It is a cyclic number.

It is not a de Polignac number, because 428070737 - 2⁸ = 428070481 is a prime.

Together with 428070739, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 428070737.

It is not a weakly prime, because it can be changed into another prime (428070739) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214035368 + 214035369.

It is an arithmetic number, because the mean of its divisors is an integer number (214035369).

Almost surely, 2^428070737 is an apocalyptic number.

It is an amenable number.

428070737 is a deficient number, since it is larger than the sum of its proper divisors (1).

428070737 is an equidigital number, since it uses as much as digits as its factorization.

428070737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 65856, while the sum is 38.

The square root of 428070737 is about 20689.8703959208. The cubic root of 428070737 is about 753.6537193937.

The spelling of 428070737 in words is "four hundred twenty-eight million, seventy thousand, seven hundred thirty-seven".