19928950 has 24 divisors (see below), whose sum is σ = 37263240. Its totient is φ = 7929600.

The previous prime is 19928921. The next prime is 19928959. The reversal of 19928950 is 5982991.

It is a junction number, because it is equal to n+sod(n) for n = 19928897 and 19928906.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (19928959) 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, 9606 + ... + 11494.

It is an arithmetic number, because the mean of its divisors is an integer number (1552635).

Almost surely, 2^19928950 is an apocalyptic number.

19928950 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19928950 is a deficient number, since it is larger than the sum of its proper divisors (17334290).

19928950 is a wasteful number, since it uses less digits than its factorization.

19928950 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2112 (or 2107 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 43.

The square root of 19928950 is about 4464.1852560126. The cubic root of 19928950 is about 271.1199479910.

The spelling of 19928950 in words is "nineteen million, nine hundred twenty-eight thousand, nine hundred fifty".