18828422 has 4 divisors (see below), whose sum is σ = 28242636. Its totient is φ = 9414210.

The previous prime is 18828391. The next prime is 18828427. The reversal of 18828422 is 22482881.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18828427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4707104 + ... + 4707107.

It is an arithmetic number, because the mean of its divisors is an integer number (7060659).

Almost surely, 2^18828422 is an apocalyptic number.

18828422 is a deficient number, since it is larger than the sum of its proper divisors (9414214).

18828422 is an equidigital number, since it uses as much as digits as its factorization.

18828422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9414213.

The product of its digits is 16384, while the sum is 35.

The square root of 18828422 is about 4339.1729626739. The cubic root of 18828422 is about 266.0345084971.

The spelling of 18828422 in words is "eighteen million, eight hundred twenty-eight thousand, four hundred twenty-two".