428381466 has 8 divisors (see below), whose sum is σ = 856762944. Its totient is φ = 142793820.

The previous prime is 428381423. The next prime is 428381479. The reversal of 428381466 is 664183824.

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

428381466 is an admirable number.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35698450 + ... + 35698461.

It is an arithmetic number, because the mean of its divisors is an integer number (107095368).

Almost surely, 2^428381466 is an apocalyptic number.

428381466 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

428381466 is a wasteful number, since it uses less digits than its factorization.

428381466 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71396916.

The product of its digits is 221184, while the sum is 42.

The square root of 428381466 is about 20697.3782397675. The cubic root of 428381466 is about 753.8360299375.

The spelling of 428381466 in words is "four hundred twenty-eight million, three hundred eighty-one thousand, four hundred sixty-six".