16330402 has 12 divisors (see below), whose sum is σ = 26925318. Its totient is φ = 7422800.

The previous prime is 16330381. The next prime is 16330409. The reversal of 16330402 is 20403361.

It can be written as a sum of positive squares in only one way, i.e., 9418761 + 6911641 = 3069^2 + 2629^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 16330402.

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 5 ways as a sum of consecutive naturals, for example, 33499 + ... + 33982.

Almost surely, 2^16330402 is an apocalyptic number.

16330402 is a deficient number, since it is larger than the sum of its proper divisors (10594916).

16330402 is a wasteful number, since it uses less digits than its factorization.

16330402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67505 (or 67494 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 16330402 is about 4041.0892096067. The cubic root of 16330402 is about 253.7069076767.

Adding to 16330402 its reverse (20403361), we get a palindrome (36733763).

The spelling of 16330402 in words is "sixteen million, three hundred thirty thousand, four hundred two".