20019950 has 24 divisors (see below), whose sum is σ = 37363680. Its totient is φ = 7980800.

The previous prime is 20019949. The next prime is 20019953. The reversal of 20019950 is 5991002.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20019953) 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, 21086 + ... + 22014.

It is an arithmetic number, because the mean of its divisors is an integer number (1556820).

Almost surely, 2^20019950 is an apocalyptic number.

20019950 is a deficient number, since it is larger than the sum of its proper divisors (17343730).

20019950 is a wasteful number, since it uses less digits than its factorization.

20019950 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1372 (or 1367 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 26.

The square root of 20019950 is about 4474.3658768590. The cubic root of 20019950 is about 271.5319860523.

The spelling of 20019950 in words is "twenty million, nineteen thousand, nine hundred fifty".