428808281 has 8 divisors (see below), whose sum is σ = 480434304. Its totient is φ = 379289520.

The previous prime is 428808253. The next prime is 428808301. The reversal of 428808281 is 182808824.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 428808281 - 2¹⁴ = 428791897 is a prime.

It is a super-2 number, since 2×428808281² = 367753083708349922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (428808581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 526385 + ... + 527198.

It is an arithmetic number, because the mean of its divisors is an integer number (60054288).

Almost surely, 2^428808281 is an apocalyptic number.

It is an amenable number.

428808281 is a deficient number, since it is larger than the sum of its proper divisors (51626023).

428808281 is a wasteful number, since it uses less digits than its factorization.

428808281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1053631.

The product of its (nonzero) digits is 65536, while the sum is 41.

The square root of 428808281 is about 20707.6865197443. The cubic root of 428808281 is about 754.0863066593.

The spelling of 428808281 in words is "four hundred twenty-eight million, eight hundred eight thousand, two hundred eighty-one".