16327820 has 24 divisors (see below), whose sum is σ = 36306144. Its totient is φ = 6146816.

The previous prime is 16327789. The next prime is 16327877. The reversal of 16327820 is 2872361.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23672 + ... + 24351.

It is an arithmetic number, because the mean of its divisors is an integer number (1512756).

Almost surely, 2^16327820 is an apocalyptic number.

16327820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16327820 is an abundant number, since it is smaller than the sum of its proper divisors (19978324).

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

16327820 is a wasteful number, since it uses less digits than its factorization.

16327820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48049 (or 48047 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 16327820 is about 4040.7697286532. The cubic root of 16327820 is about 253.6935357715.

The spelling of 16327820 in words is "sixteen million, three hundred twenty-seven thousand, eight hundred twenty".