4643478 has 48 divisors (see below), whose sum is σ = 11625120. Its totient is φ = 1312128.

The previous prime is 4643473. The next prime is 4643491. The reversal of 4643478 is 8743464.

4643478 is a `hidden beast` number, since 4 + 643 + 4 + 7 + 8 = 666.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4643473) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 17128 + ... + 17396.

It is an arithmetic number, because the mean of its divisors is an integer number (242190).

Almost surely, 2^4643478 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4643478, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5812560).

4643478 is an abundant number, since it is smaller than the sum of its proper divisors (6981642).

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

4643478 is a wasteful number, since it uses less digits than its factorization.

4643478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421 (or 418 counting only the distinct ones).

The product of its digits is 64512, while the sum is 36.

The square root of 4643478 is about 2154.8730821095. The cubic root of 4643478 is about 166.8326816903.

The spelling of 4643478 in words is "four million, six hundred forty-three thousand, four hundred seventy-eight".