4478838 has 48 divisors (see below), whose sum is σ = 11102976. Its totient is φ = 1179360.

The previous prime is 4478833. The next prime is 4478843. The reversal of 4478838 is 8388744.

It is an interprime number because it is at equal distance from previous prime (4478833) and next prime (4478843).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 4478838.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4478833) 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, 6783 + ... + 7413.

It is an arithmetic number, because the mean of its divisors is an integer number (231312).

Almost surely, 2^4478838 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4478838, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5551488).

4478838 is an abundant number, since it is smaller than the sum of its proper divisors (6624138).

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

4478838 is a wasteful number, since it uses less digits than its factorization.

4478838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669 (or 656 counting only the distinct ones).

The product of its digits is 172032, while the sum is 42.

The square root of 4478838 is about 2116.3265343514. The cubic root of 4478838 is about 164.8371579816.

The spelling of 4478838 in words is "four million, four hundred seventy-eight thousand, eight hundred thirty-eight".