428921271 has 16 divisors (see below), whose sum is σ = 672818400. Its totient is φ = 269126784.

The previous prime is 428921249. The next prime is 428921303. The reversal of 428921271 is 172129824.

It is not a de Polignac number, because 428921271 - 2¹¹ = 428919223 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (428921231) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 466776 + ... + 467693.

It is an arithmetic number, because the mean of its divisors is an integer number (42051150).

Almost surely, 2^428921271 is an apocalyptic number.

428921271 is a deficient number, since it is larger than the sum of its proper divisors (243897129).

428921271 is a wasteful number, since it uses less digits than its factorization.

428921271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 934495 (or 934489 counting only the distinct ones).

The product of its digits is 16128, while the sum is 36.

The square root of 428921271 is about 20710.4145540354. The cubic root of 428921271 is about 754.1525341809.

The spelling of 428921271 in words is "four hundred twenty-eight million, nine hundred twenty-one thousand, two hundred seventy-one".