19021422 has 32 divisors (see below), whose sum is σ = 43909632. Its totient is φ = 5380704.

The previous prime is 19021411. The next prime is 19021433. The reversal of 19021422 is 22412091.

It is an interprime number because it is at equal distance from previous prime (19021411) and next prime (19021433).

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

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, 2128 + ... + 6524.

It is an arithmetic number, because the mean of its divisors is an integer number (1372176).

Almost surely, 2^19021422 is an apocalyptic number.

19021422 is an abundant number, since it is smaller than the sum of its proper divisors (24888210).

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

19021422 is a wasteful number, since it uses less digits than its factorization.

19021422 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4512.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 19021422 is about 4361.3555232290. The cubic root of 19021422 is about 266.9404122941.

It can be divided in two parts, 190 and 21422, that added together give a palindrome (21612).

The spelling of 19021422 in words is "nineteen million, twenty-one thousand, four hundred twenty-two".