19820050 has 24 divisors (see below), whose sum is σ = 38139300. Its totient is φ = 7654080.

The previous prime is 19820027. The next prime is 19820057. The reversal of 19820050 is 5002891.

It can be written as a sum of positive squares in 6 ways, for example, as 9979281 + 9840769 = 3159^2 + 3137^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a junction number, because it is equal to n+sod(n) for n = 19819997 and 19820024.

It is not an unprimeable number, because it can be changed into a prime (19820057) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5385 + ... + 8284.

Almost surely, 2^19820050 is an apocalyptic number.

19820050 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19820050 is a deficient number, since it is larger than the sum of its proper divisors (18319250).

19820050 is a wasteful number, since it uses less digits than its factorization.

19820050 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13710 (or 13705 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 25.

The square root of 19820050 is about 4451.9714734037. The cubic root of 19820050 is about 270.6252086787.

The spelling of 19820050 in words is "nineteen million, eight hundred twenty thousand, fifty".