19996488 has 108 divisors (see below), whose sum is σ = 59445945. Its totient is φ = 6071040.

The previous prime is 19996469. The next prime is 19996489. The reversal of 19996488 is 88469991.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 18301284 + 1695204 = 4278^2 + 1302^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3162.

It is a nude number because it is divisible by every one of its digits.

Its product of digits (1119744) is a multiple of the sum of its prime factors (108).

It is not an unprimeable number, because it can be changed into a prime (19996489) 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 26 ways as a sum of consecutive naturals, for example, 645033 + ... + 645063.

Almost surely, 2^19996488 is an apocalyptic number.

19996488 is a gapful number since it is divisible by the number (18) 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 19996488

19996488 is an abundant number, since it is smaller than the sum of its proper divisors (39449457).

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

19996488 is a wasteful number, since it uses less digits than its factorization.

19996488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108 (or 53 counting only the distinct ones).

The product of its digits is 1119744, while the sum is 54.

The square root of 19996488 is about 4471.7432842237. The cubic root of 19996488 is about 271.4258723383.

The spelling of 19996488 in words is "nineteen million, nine hundred ninety-six thousand, four hundred eighty-eight".