428555481 has 8 divisors (see below), whose sum is σ = 596251200. Its totient is φ = 273281712.

The previous prime is 428555471. The next prime is 428555483. The reversal of 428555481 is 184555824.

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

It is not a de Polignac number, because 428555481 - 2¹³ = 428547289 is a prime.

It is a super-2 number, since 2×428555481² = 367319600590282722, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (428555483) 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, 3105406 + ... + 3105543.

It is an arithmetic number, because the mean of its divisors is an integer number (74531400).

Almost surely, 2^428555481 is an apocalyptic number.

It is an amenable number.

428555481 is a deficient number, since it is larger than the sum of its proper divisors (167695719).

428555481 is a wasteful number, since it uses less digits than its factorization.

428555481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6210975.

The product of its digits is 256000, while the sum is 42.

The square root of 428555481 is about 20701.5816062445. The cubic root of 428555481 is about 753.9380893004.

The spelling of 428555481 in words is "four hundred twenty-eight million, five hundred fifty-five thousand, four hundred eighty-one".