19670428 has 24 divisors (see below), whose sum is σ = 38035872. Its totient is φ = 8853504.

The previous prime is 19670407. The next prime is 19670437. The reversal of 19670428 is 82407691.

It is a hoax number, since the sum of its digits (37) 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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4725 + ... + 7852.

It is an arithmetic number, because the mean of its divisors is an integer number (1584828).

Almost surely, 2^19670428 is an apocalyptic number.

It is an amenable number.

19670428 is a deficient number, since it is larger than the sum of its proper divisors (18365444).

19670428 is a wasteful number, since it uses less digits than its factorization.

19670428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12621 (or 12619 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 37.

The square root of 19670428 is about 4435.1356236309. The cubic root of 19670428 is about 269.9425026172.

The spelling of 19670428 in words is "nineteen million, six hundred seventy thousand, four hundred twenty-eight".