428015201 has 2 divisors, whose sum is σ = 428015202. Its totient is φ = 428015200.

The previous prime is 428015197. The next prime is 428015219. The reversal of 428015201 is 102510824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 288184576 + 139830625 = 16976^2 + 11825^2 .

It is a cyclic number.

It is not a de Polignac number, because 428015201 - 2² = 428015197 is a prime.

It is a super-3 number, since 3×428015201³ (a number of 27 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (428015801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 214007600 + 214007601.

It is an arithmetic number, because the mean of its divisors is an integer number (214007601).

Almost surely, 2^428015201 is an apocalyptic number.

It is an amenable number.

428015201 is a deficient number, since it is larger than the sum of its proper divisors (1).

428015201 is an equidigital number, since it uses as much as digits as its factorization.

428015201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 640, while the sum is 23.

The square root of 428015201 is about 20688.5282463495. The cubic root of 428015201 is about 753.6211260865.

The spelling of 428015201 in words is "four hundred twenty-eight million, fifteen thousand, two hundred one".