19386428 has 12 divisors (see below), whose sum is σ = 34186152. Its totient is φ = 9618960.

The previous prime is 19386379. The next prime is 19386449. The reversal of 19386428 is 82468391.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17975 + ... + 19022.

It is an arithmetic number, because the mean of its divisors is an integer number (2848846).

Almost surely, 2^19386428 is an apocalyptic number.

It is an amenable number.

19386428 is a deficient number, since it is larger than the sum of its proper divisors (14799724).

19386428 is a wasteful number, since it uses less digits than its factorization.

19386428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37132 (or 37130 counting only the distinct ones).

The product of its digits is 82944, while the sum is 41.

The square root of 19386428 is about 4403.0021576193. The cubic root of 19386428 is about 268.6370639233.

The spelling of 19386428 in words is "nineteen million, three hundred eighty-six thousand, four hundred twenty-eight".