428481427 has 8 divisors (see below), whose sum is σ = 469785600. Its totient is φ = 387569160.

The previous prime is 428481401. The next prime is 428481433. The reversal of 428481427 is 724184824.

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

It is not a de Polignac number, because 428481427 - 2²³ = 420092819 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428481427.

It is not an unprimeable number, because it can be changed into a prime (428481827) 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, 95683 + ... + 100060.

It is an arithmetic number, because the mean of its divisors is an integer number (58723200).

Almost surely, 2^428481427 is an apocalyptic number.

428481427 is a deficient number, since it is larger than the sum of its proper divisors (41304173).

428481427 is a wasteful number, since it uses less digits than its factorization.

428481427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195953.

The product of its digits is 114688, while the sum is 40.

The square root of 428481427 is about 20699.7929216695. The cubic root of 428481427 is about 753.8946601919.

The spelling of 428481427 in words is "four hundred twenty-eight million, four hundred eighty-one thousand, four hundred twenty-seven".