19798070 has 8 divisors (see below), whose sum is σ = 35636544. Its totient is φ = 7919224.

The previous prime is 19798069. The next prime is 19798087. The reversal of 19798070 is 7089791.

It is a sphenic number, since it is the product of 3 distinct primes.

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 3 ways as a sum of consecutive naturals, for example, 989894 + ... + 989913.

It is an arithmetic number, because the mean of its divisors is an integer number (4454568).

Almost surely, 2^19798070 is an apocalyptic number.

19798070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19798070 is a deficient number, since it is larger than the sum of its proper divisors (15838474).

19798070 is a wasteful number, since it uses less digits than its factorization.

19798070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979814.

The product of its (nonzero) digits is 31752, while the sum is 41.

The square root of 19798070 is about 4449.5022193499. The cubic root of 19798070 is about 270.5251325386.

The spelling of 19798070 in words is "nineteen million, seven hundred ninety-eight thousand, seventy".