16193820 has 24 divisors (see below), whose sum is σ = 45342864. Its totient is φ = 4318336.

The previous prime is 16193819. The next prime is 16193831. The reversal of 16193820 is 2839161.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 134889 + ... + 135008.

It is an arithmetic number, because the mean of its divisors is an integer number (1889286).

Almost surely, 2^16193820 is an apocalyptic number.

16193820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16193820 is an abundant number, since it is smaller than the sum of its proper divisors (29149044).

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

16193820 is a wasteful number, since it uses less digits than its factorization.

16193820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 269909 (or 269907 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 16193820 is about 4024.1545695960. The cubic root of 16193820 is about 252.9976201039.

The spelling of 16193820 in words is "sixteen million, one hundred ninety-three thousand, eight hundred twenty".