16486820 has 24 divisors (see below), whose sum is σ = 39568704. Its totient is φ = 5652576.

The previous prime is 16486777. The next prime is 16486829. The reversal of 16486820 is 2868461.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is not an unprimeable number, because it can be changed into a prime (16486829) by changing a digit.

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, 58742 + ... + 59021.

It is an arithmetic number, because the mean of its divisors is an integer number (1648696).

Almost surely, 2^16486820 is an apocalyptic number.

16486820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16486820 is an abundant number, since it is smaller than the sum of its proper divisors (23081884).

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

16486820 is a wasteful number, since it uses less digits than its factorization.

16486820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 117779 (or 117777 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 35.

The square root of 16486820 is about 4060.3965323599. The cubic root of 16486820 is about 254.5143647094.

The spelling of 16486820 in words is "sixteen million, four hundred eighty-six thousand, eight hundred twenty".