19428082 has 4 divisors (see below), whose sum is σ = 29142126. Its totient is φ = 9714040.

The previous prime is 19428067. The next prime is 19428083. The reversal of 19428082 is 28082491.

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

It can be written as a sum of positive squares in only one way, i.e., 10361961 + 9066121 = 3219^2 + 3011^2 .

It is not an unprimeable number, because it can be changed into a prime (19428083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4857019 + ... + 4857022.

Almost surely, 2^19428082 is an apocalyptic number.

19428082 is a deficient number, since it is larger than the sum of its proper divisors (9714044).

19428082 is an equidigital number, since it uses as much as digits as its factorization.

19428082 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9714043.

The product of its (nonzero) digits is 9216, while the sum is 34.

The square root of 19428082 is about 4407.7298011561. The cubic root of 19428082 is about 268.8293256371.

The spelling of 19428082 in words is "nineteen million, four hundred twenty-eight thousand, eighty-two".