19842928 has 40 divisors (see below), whose sum is σ = 45854208. Its totient is φ = 8133312.

The previous prime is 19842923. The next prime is 19842937. The reversal of 19842928 is 82924891.

It is a super-2 number, since 2×19842928² = 787483583226368, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19842923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1276 + ... + 6427.

Almost surely, 2^19842928 is an apocalyptic number.

It is an amenable number.

19842928 is an abundant number, since it is smaller than the sum of its proper divisors (26011280).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19842928 is a wasteful number, since it uses less digits than its factorization.

19842928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7741 (or 7735 counting only the distinct ones).

The product of its digits is 82944, while the sum is 43.

The square root of 19842928 is about 4454.5401558410. The cubic root of 19842928 is about 270.7292949088.

The spelling of 19842928 in words is "nineteen million, eight hundred forty-two thousand, nine hundred twenty-eight".