19940822 has 16 divisors (see below), whose sum is σ = 32774544. Its totient is φ = 9024000.

The previous prime is 19940821. The next prime is 19940849. The reversal of 19940822 is 22804991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19940821) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3422 + ... + 7182.

It is an arithmetic number, because the mean of its divisors is an integer number (2048409).

Almost surely, 2^19940822 is an apocalyptic number.

19940822 is a deficient number, since it is larger than the sum of its proper divisors (12833722).

19940822 is a wasteful number, since it uses less digits than its factorization.

19940822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4015.

The product of its (nonzero) digits is 10368, while the sum is 35.

The square root of 19940822 is about 4465.5147519631. The cubic root of 19940822 is about 271.1737741598.

The spelling of 19940822 in words is "nineteen million, nine hundred forty thousand, eight hundred twenty-two".