4428890786 has 8 divisors (see below), whose sum is σ = 6653702124. Its totient is φ = 2210990080.

The previous prime is 4428890783. The next prime is 4428890863. The reversal of 4428890786 is 6870988244.

It can be written as a sum of positive squares in 2 ways, for example, as 3356000761 + 1072890025 = 57931^2 + 32755^2 .

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

It is not an unprimeable number, because it can be changed into a prime (4428890783) 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, 1726055 + ... + 1728618.

Almost surely, 2^4428890786 is an apocalyptic number.

4428890786 is a deficient number, since it is larger than the sum of its proper divisors (2224811338).

4428890786 is a wasteful number, since it uses less digits than its factorization.

4428890786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3455316.

The product of its (nonzero) digits is 6193152, while the sum is 56.

The square root of 4428890786 is about 66549.9119909260. The cubic root of 4428890786 is about 1642.2212102009.

The spelling of 4428890786 in words is "four billion, four hundred twenty-eight million, eight hundred ninety thousand, seven hundred eighty-six".