19969770 has 16 divisors (see below), whose sum is σ = 47927520. Its totient is φ = 5325264.

The previous prime is 19969769. The next prime is 19969793. The reversal of 19969770 is 7796991.

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, 332800 + ... + 332859.

It is an arithmetic number, because the mean of its divisors is an integer number (2995470).

Almost surely, 2^19969770 is an apocalyptic number.

19969770 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19969770 is an abundant number, since it is smaller than the sum of its proper divisors (27957750).

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

19969770 is a wasteful number, since it uses less digits than its factorization.

19969770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665669.

The product of its (nonzero) digits is 214326, while the sum is 48.

The square root of 19969770 is about 4468.7548601372. The cubic root of 19969770 is about 271.3049312890.

The spelling of 19969770 in words is "nineteen million, nine hundred sixty-nine thousand, seven hundred seventy".