19908050 has 18 divisors (see below), whose sum is σ = 37087749. Its totient is φ = 7950600.

The previous prime is 19908023. The next prime is 19908059. The reversal of 19908050 is 5080991.

It can be written as a sum of positive squares in 2 ways, for example, as 19509889 + 398161 = 4417^2 + 631^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=3155.

It is a Smith number, since the sum of its digits (32) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 19907998 and 19908016.

It is not an unprimeable number, because it can be changed into a prime (19908059) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 31235 + ... + 31865.

Almost surely, 2^19908050 is an apocalyptic number.

19908050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19908050 is a deficient number, since it is larger than the sum of its proper divisors (17179699).

19908050 is an frugal number, since it uses more digits than its factorization.

19908050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1274 (or 638 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 32.

The square root of 19908050 is about 4461.8437892871. The cubic root of 19908050 is about 271.0251380302.

Multiplying 19908050 by its sum of digits (32), we get a square (637057600 = 25240²).

The spelling of 19908050 in words is "nineteen million, nine hundred eight thousand, fifty".