19495872 has 168 divisors, whose sum is σ = 64904112. Its totient is φ = 5529600.

The previous prime is 19495829. The next prime is 19495873. The reversal of 19495872 is 27859491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19495873) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 107622 + ... + 107802.

It is an arithmetic number, because the mean of its divisors is an integer number (386334).

Almost surely, 2^19495872 is an apocalyptic number.

19495872 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 19495872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32452056).

19495872 is an abundant number, since it is smaller than the sum of its proper divisors (45408240).

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

19495872 is a wasteful number, since it uses less digits than its factorization.

19495872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 214 counting only the distinct ones).

The product of its digits is 181440, while the sum is 45.

The square root of 19495872 is about 4415.4130044652. The cubic root of 19495872 is about 269.1416361856.

The spelling of 19495872 in words is "nineteen million, four hundred ninety-five thousand, eight hundred seventy-two".