4428778 has 8 divisors (see below), whose sum is σ = 6658272. Its totient is φ = 2209356.

The previous prime is 4428773. The next prime is 4428817. The reversal of 4428778 is 8778244.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×4428778² = 39228149146568, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 4428778.

It is not an unprimeable number, because it can be changed into a prime (4428773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1300 + ... + 3247.

It is an arithmetic number, because the mean of its divisors is an integer number (832284).

Almost surely, 2^4428778 is an apocalyptic number.

4428778 is a deficient number, since it is larger than the sum of its proper divisors (2229494).

4428778 is a wasteful number, since it uses less digits than its factorization.

4428778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5036.

The product of its digits is 100352, while the sum is 40.

The square root of 4428778 is about 2104.4662031023. The cubic root of 4428778 is about 164.2207269831.

The spelling of 4428778 in words is "four million, four hundred twenty-eight thousand, seven hundred seventy-eight".