19648970 has 16 divisors (see below), whose sum is σ = 38583648. Its totient is φ = 7145040.

The previous prime is 19648949. The next prime is 19649011. The reversal of 19648970 is 7984691.

It is an unprimeable number.

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, 89204 + ... + 89423.

It is an arithmetic number, because the mean of its divisors is an integer number (2411478).

Almost surely, 2^19648970 is an apocalyptic number.

19648970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19648970 is a deficient number, since it is larger than the sum of its proper divisors (18934678).

19648970 is a wasteful number, since it uses less digits than its factorization.

19648970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178645.

The product of its (nonzero) digits is 108864, while the sum is 44.

The square root of 19648970 is about 4432.7158717879. The cubic root of 19648970 is about 269.8443089603.

The spelling of 19648970 in words is "nineteen million, six hundred forty-eight thousand, nine hundred seventy".