428404824 has 24 divisors (see below), whose sum is σ = 1160263260. Its totient is φ = 142801584.

The previous prime is 428404813. The next prime is 428404843.

428404824 is nontrivially palindromic in base 10.

It is a tau number, because it is divible by the number of its divisors (24).

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 5 ways as a sum of consecutive naturals, for example, 2974962 + ... + 2975105.

Almost surely, 2^428404824 is an apocalyptic number.

It is an amenable number.

428404824 is an abundant number, since it is smaller than the sum of its proper divisors (731858436).

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

428404824 is a wasteful number, since it uses less digits than its factorization.

428404824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5950079 (or 5950072 counting only the distinct ones).

The product of its (nonzero) digits is 65536, while the sum is 36.

The square root of 428404824 is about 20697.9425064425. The cubic root of 428404824 is about 753.8497309520.

The spelling of 428404824 in words is "four hundred twenty-eight million, four hundred four thousand, eight hundred twenty-four".