19806414 has 32 divisors (see below), whose sum is σ = 40449024. Its totient is φ = 6464640.

The previous prime is 19806401. The next prime is 19806419. The reversal of 19806414 is 41460891.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19806419) 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 15 ways as a sum of consecutive naturals, for example, 88707 + ... + 88929.

It is an arithmetic number, because the mean of its divisors is an integer number (1264032).

Almost surely, 2^19806414 is an apocalyptic number.

19806414 is an abundant number, since it is smaller than the sum of its proper divisors (20642610).

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

19806414 is a wasteful number, since it uses less digits than its factorization.

19806414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 472.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 19806414 is about 4450.4397535525. The cubic root of 19806414 is about 270.5631319441.

The spelling of 19806414 in words is "nineteen million, eight hundred six thousand, four hundred fourteen".