19920422 has 4 divisors (see below), whose sum is σ = 29880636. Its totient is φ = 9960210.

The previous prime is 19920401. The next prime is 19920427. The reversal of 19920422 is 22402991.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19920427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4980104 + ... + 4980107.

It is an arithmetic number, because the mean of its divisors is an integer number (7470159).

Almost surely, 2^19920422 is an apocalyptic number.

19920422 is a deficient number, since it is larger than the sum of its proper divisors (9960214).

19920422 is an equidigital number, since it uses as much as digits as its factorization.

19920422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9960213.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 19920422 is about 4463.2299963143. The cubic root of 19920422 is about 271.0812699072.

The spelling of 19920422 in words is "nineteen million, nine hundred twenty thousand, four hundred twenty-two".