19422036 has 18 divisors (see below), whose sum is σ = 49094682. Its totient is φ = 6474000.

The previous prime is 19422031. The next prime is 19422049. The reversal of 19422036 is 63022491.

It can be written as a sum of positive squares in only one way, i.e., 16160400 + 3261636 = 4020^2 + 1806^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19422031) 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 5 ways as a sum of consecutive naturals, for example, 269715 + ... + 269786.

Almost surely, 2^19422036 is an apocalyptic number.

It is an amenable number.

19422036 is an abundant number, since it is smaller than the sum of its proper divisors (29672646).

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

19422036 is a wasteful number, since it uses less digits than its factorization.

19422036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539511 (or 539506 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 19422036 is about 4407.0439072013. The cubic root of 19422036 is about 268.8014362700.

The spelling of 19422036 in words is "nineteen million, four hundred twenty-two thousand, thirty-six".