4778224 has 40 divisors (see below), whose sum is σ = 10700208. Its totient is φ = 2042880.

The previous prime is 4778197. The next prime is 4778231. The reversal of 4778224 is 4228774.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 4778224.

It is a congruent number.

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, 2194 + ... + 3790.

Almost surely, 2^4778224 is an apocalyptic number.

4778224 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4778224, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5350104).

4778224 is an abundant number, since it is smaller than the sum of its proper divisors (5921984).

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

4778224 is a wasteful number, since it uses less digits than its factorization.

4778224 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1633 (or 1627 counting only the distinct ones).

The product of its digits is 25088, while the sum is 34.

The square root of 4778224 is about 2185.9149114272. The cubic root of 4778224 is about 168.4310548062.

The spelling of 4778224 in words is "four million, seven hundred seventy-eight thousand, two hundred twenty-four".