19422928 has 80 divisors (see below), whose sum is σ = 45612160. Its totient is φ = 7838208.

The previous prime is 19422899. The next prime is 19422943. The reversal of 19422928 is 82922491.

It is a Harshad number since it is a multiple of its sum of digits (37).

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 178138 + ... + 178246.

It is an arithmetic number, because the mean of its divisors is an integer number (570152).

Almost surely, 2^19422928 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19422928, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (22806080).

19422928 is an abundant number, since it is smaller than the sum of its proper divisors (26189232).

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

19422928 is a wasteful number, since it uses less digits than its factorization.

19422928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 204 (or 198 counting only the distinct ones).

The product of its digits is 20736, while the sum is 37.

The square root of 19422928 is about 4407.1451076632. The cubic root of 19422928 is about 268.8055513073.

The spelling of 19422928 in words is "nineteen million, four hundred twenty-two thousand, nine hundred twenty-eight".