19974850 has 72 divisors (see below), whose sum is σ = 44782848. Its totient is φ = 6602400.

The previous prime is 19974839. The next prime is 19974869. The reversal of 19974850 is 5847991.

It is a junction number, because it is equal to n+sod(n) for n = 19974797 and 19974806.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 75819 + ... + 76081.

It is an arithmetic number, because the mean of its divisors is an integer number (621984).

Almost surely, 2^19974850 is an apocalyptic number.

19974850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

19974850 is an abundant number, since it is smaller than the sum of its proper divisors (24807998).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

19974850 is a wasteful number, since it uses less digits than its factorization.

19974850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320 (or 308 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 19974850 is about 4469.3232149846. The cubic root of 19974850 is about 271.3279345952.

The spelling of 19974850 in words is "nineteen million, nine hundred seventy-four thousand, eight hundred fifty".