428280081 has 8 divisors (see below), whose sum is σ = 571211904. Its totient is φ = 285434160.

The previous prime is 428280049. The next prime is 428280119. The reversal of 428280081 is 180082824.

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

It is not a de Polignac number, because 428280081 - 2⁵ = 428280049 is a prime.

It is a super-2 number, since 2×428280081² = 366847655562733122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (428280001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8766 + ... + 30551.

It is an arithmetic number, because the mean of its divisors is an integer number (71401488).

Almost surely, 2^428280081 is an apocalyptic number.

It is an amenable number.

428280081 is a deficient number, since it is larger than the sum of its proper divisors (142931823).

428280081 is a wasteful number, since it uses less digits than its factorization.

428280081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42951.

The product of its (nonzero) digits is 8192, while the sum is 33.

The square root of 428280081 is about 20694.9288715859. The cubic root of 428280081 is about 753.7765551453.

The spelling of 428280081 in words is "four hundred twenty-eight million, two hundred eighty thousand, eighty-one".