16340638 has 16 divisors (see below), whose sum is σ = 26058240. Its totient is φ = 7685088.

The previous prime is 16340629. The next prime is 16340647. The reversal of 16340638 is 83604361.

It is an interprime number because it is at equal distance from previous prime (16340629) and next prime (16340647).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8995 + ... + 10657.

It is an arithmetic number, because the mean of its divisors is an integer number (1628640).

Almost surely, 2^16340638 is an apocalyptic number.

16340638 is a deficient number, since it is larger than the sum of its proper divisors (9717602).

16340638 is an equidigital number, since it uses as much as digits as its factorization.

16340638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1716 (or 1682 counting only the distinct ones).

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

The square root of 16340638 is about 4042.3555014372. The cubic root of 16340638 is about 253.7599049738.

Adding to 16340638 its reverse (83604361), we get a palindrome (99944999).

The spelling of 16340638 in words is "sixteen million, three hundred forty thousand, six hundred thirty-eight".