16443490 has 16 divisors (see below), whose sum is σ = 33826752. Its totient is φ = 5637744.

The previous prime is 16443481. The next prime is 16443499. The reversal of 16443490 is 9434461.

It is an interprime number because it is at equal distance from previous prime (16443481) and next prime (16443499).

It is a super-3 number, since 3×16443490³ (a number of 23 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (16443499) 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, 117384 + ... + 117523.

It is an arithmetic number, because the mean of its divisors is an integer number (2114172).

Almost surely, 2^16443490 is an apocalyptic number.

16443490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

16443490 is an abundant number, since it is smaller than the sum of its proper divisors (17383262).

16443490 is a wasteful number, since it uses less digits than its factorization.

16443490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234921.

The product of its (nonzero) digits is 10368, while the sum is 31.

The square root of 16443490 is about 4055.0573362161. The cubic root of 16443490 is about 254.2912009385.

The spelling of 16443490 in words is "sixteen million, four hundred forty-three thousand, four hundred ninety".