19899752 has 16 divisors (see below), whose sum is σ = 37643940. Its totient is φ = 9861376.

The previous prime is 19899749. The next prime is 19899773. The reversal of 19899752 is 25799891.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 18887716 + 1012036 = 4346^2 + 1006^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 19899752.

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 3 ways as a sum of consecutive naturals, for example, 10103 + ... + 11910.

Almost surely, 2^19899752 is an apocalyptic number.

It is an amenable number.

19899752 is a deficient number, since it is larger than the sum of its proper divisors (17744188).

19899752 is a wasteful number, since it uses less digits than its factorization.

19899752 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22132 (or 22128 counting only the distinct ones).

The product of its digits is 408240, while the sum is 50.

The square root of 19899752 is about 4460.9138077304. The cubic root of 19899752 is about 270.9874768976.

The spelling of 19899752 in words is "nineteen million, eight hundred ninety-nine thousand, seven hundred fifty-two".