16330401 has 12 divisors (see below), whose sum is σ = 23689380. Its totient is φ = 10840320.

The previous prime is 16330381. The next prime is 16330409. The reversal of 16330401 is 10403361.

16330401 = T₂₄₁ + T₂₄₂ + ... + T₄₈₁.

It can be written as a sum of positive squares in 2 ways, for example, as 8910225 + 7420176 = 2985^2 + 2724^2 .

It is not a de Polignac number, because 16330401 - 2⁹ = 16329889 is a prime.

It is not an unprimeable number, because it can be changed into a prime (16330409) 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 11 ways as a sum of consecutive naturals, for example, 1596 + ... + 5933.

It is an arithmetic number, because the mean of its divisors is an integer number (1974115).

Almost surely, 2^16330401 is an apocalyptic number.

It is an amenable number.

16330401 is a deficient number, since it is larger than the sum of its proper divisors (7358979).

16330401 is a wasteful number, since it uses less digits than its factorization.

16330401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7776 (or 7773 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 16330401 is about 4041.0890858777. The cubic root of 16330401 is about 253.7069024981.

Adding to 16330401 its reverse (10403361), we get a palindrome (26733762).

The spelling of 16330401 in words is "sixteen million, three hundred thirty thousand, four hundred one".