16331830 has 32 divisors (see below), whose sum is σ = 31680000. Its totient is φ = 6041952.

The previous prime is 16331807. The next prime is 16331831. The reversal of 16331830 is 3813361.

It is a happy number.

It is a super-2 number, since 2×16331830² = 533457342297800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 16331795 and 16331804.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16331831) 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 15 ways as a sum of consecutive naturals, for example, 7171 + ... + 9169.

It is an arithmetic number, because the mean of its divisors is an integer number (990000).

Almost surely, 2^16331830 is an apocalyptic number.

16331830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16331830 is a deficient number, since it is larger than the sum of its proper divisors (15348170).

16331830 is a wasteful number, since it uses less digits than its factorization.

16331830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2068.

The product of its (nonzero) digits is 1296, while the sum is 25.

The square root of 16331830 is about 4041.2658907822. The cubic root of 16331830 is about 253.7143025325.

It can be divided in two parts, 16331 and 830, that added together give a square (17161 = 131²).

The spelling of 16331830 in words is "sixteen million, three hundred thirty-one thousand, eight hundred thirty".