16021850 has 36 divisors (see below), whose sum is σ = 32298714. Its totient is φ = 5878080.

The previous prime is 16021849. The next prime is 16021861. The reversal of 16021850 is 5812061.

It can be written as a sum of positive squares in 9 ways, for example, as 395641 + 15626209 = 629^2 + 3953^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 101972 + ... + 102128.

Almost surely, 2^16021850 is an apocalyptic number.

16021850 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16021850 is an abundant number, since it is smaller than the sum of its proper divisors (16276864).

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

16021850 is a wasteful number, since it uses less digits than its factorization.

16021850 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 339 (or 177 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 23.

The square root of 16021850 is about 4002.7303181703. The cubic root of 16021850 is about 252.0988631160.

The spelling of 16021850 in words is "sixteen million, twenty-one thousand, eight hundred fifty".