428460408 has 64 divisors (see below), whose sum is σ = 1199616000. Its totient is φ = 141686496.

The previous prime is 428460391. The next prime is 428460443. The reversal of 428460408 is 804064824.

428460408 is a `hidden beast` number, since 42 + 8 + 4 + 604 + 0 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19623 + ... + 35241.

It is an arithmetic number, because the mean of its divisors is an integer number (18744000).

Almost surely, 2^428460408 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 428460408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (599808000).

428460408 is an abundant number, since it is smaller than the sum of its proper divisors (771155592).

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

428460408 is a wasteful number, since it uses less digits than its factorization.

428460408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15761 (or 15751 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 428460408 is about 20699.2852050500. The cubic root of 428460408 is about 753.8823326478.

The spelling of 428460408 in words is "four hundred twenty-eight million, four hundred sixty thousand, four hundred eight".