4478724 has 36 divisors (see below), whose sum is σ = 11566464. Its totient is φ = 1460592.

The previous prime is 4478707. The next prime is 4478741. The reversal of 4478724 is 4278744.

It is an interprime number because it is at equal distance from previous prime (4478707) and next prime (4478741).

It is a tau number, because it is divible by the number of its divisors (36).

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 369 + ... + 3015.

Almost surely, 2^4478724 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 4478724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5783232).

4478724 is an abundant number, since it is smaller than the sum of its proper divisors (7087740).

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

4478724 is a wasteful number, since it uses less digits than its factorization.

4478724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2704 (or 2699 counting only the distinct ones).

The product of its digits is 50176, while the sum is 36.

The square root of 4478724 is about 2116.2996007182. The cubic root of 4478724 is about 164.8357594346.

The spelling of 4478724 in words is "four million, four hundred seventy-eight thousand, seven hundred twenty-four".