19428364 has 6 divisors (see below), whose sum is σ = 33999644. Its totient is φ = 9714180.

The previous prime is 19428361. The next prime is 19428371. The reversal of 19428364 is 46382491.

It is a super-2 number, since 2×19428364² = 754922655432992, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (19428361) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2428542 + ... + 2428549.

Almost surely, 2^19428364 is an apocalyptic number.

It is an amenable number.

19428364 is a deficient number, since it is larger than the sum of its proper divisors (14571280).

19428364 is a wasteful number, since it uses less digits than its factorization.

19428364 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4857095 (or 4857093 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 19428364 is about 4407.7617902967. The cubic root of 19428364 is about 268.8306263231.

The spelling of 19428364 in words is "nineteen million, four hundred twenty-eight thousand, three hundred sixty-four".