423648784 has 40 divisors (see below), whose sum is σ = 896100632. Its totient is φ = 192844800.

The previous prime is 423648767. The next prime is 423648803. The reversal of 423648784 is 487846324.

It can be written as a sum of positive squares in 4 ways, for example, as 86118400 + 337530384 = 9280^2 + 18372^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1234 + ... + 29134.

Almost surely, 2^423648784 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 423648784, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (448050316).

423648784 is an abundant number, since it is smaller than the sum of its proper divisors (472451848).

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

423648784 is a wasteful number, since it uses less digits than its factorization.

423648784 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27995 (or 27989 counting only the distinct ones).

The product of its digits is 1032192, while the sum is 46.

The square root of 423648784 is about 20582.7302367786. The cubic root of 423648784 is about 751.0496615215.

The spelling of 423648784 in words is "four hundred twenty-three million, six hundred forty-eight thousand, seven hundred eighty-four".