19921314 has 32 divisors (see below), whose sum is σ = 48214656. Its totient is φ = 5356800.

The previous prime is 19921303. The next prime is 19921327. The reversal of 19921314 is 41312991.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13237 + ... + 14664.

It is an arithmetic number, because the mean of its divisors is an integer number (1506708).

Almost surely, 2^19921314 is an apocalyptic number.

19921314 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

19921314 is an abundant number, since it is smaller than the sum of its proper divisors (28293342).

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

19921314 is a wasteful number, since it uses less digits than its factorization.

19921314 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27930.

The product of its digits is 1944, while the sum is 30.

The square root of 19921314 is about 4463.3299228267. The cubic root of 19921314 is about 271.0853160210.

The spelling of 19921314 in words is "nineteen million, nine hundred twenty-one thousand, three hundred fourteen".