19423272 has 128 divisors (see below), whose sum is σ = 57024000. Its totient is φ = 5456640.

The previous prime is 19423249. The next prime is 19423273. The reversal of 19423272 is 27232491.

It is not an unprimeable number, because it can be changed into a prime (19423273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 329179 + ... + 329237.

It is an arithmetic number, because the mean of its divisors is an integer number (445500).

Almost surely, 2^19423272 is an apocalyptic number.

19423272 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 19423272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28512000).

19423272 is an abundant number, since it is smaller than the sum of its proper divisors (37600728).

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

19423272 is a wasteful number, since it uses less digits than its factorization.

19423272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 151 (or 147 counting only the distinct ones).

The product of its digits is 6048, while the sum is 30.

The square root of 19423272 is about 4407.1841350232. The cubic root of 19423272 is about 268.8071382387.

The spelling of 19423272 in words is "nineteen million, four hundred twenty-three thousand, two hundred seventy-two".