16640134 has 8 divisors (see below), whose sum is σ = 28525968. Its totient is φ = 7131480.

The previous prime is 16640123. The next prime is 16640167. The reversal of 16640134 is 43104661.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 16640099 and 16640108.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 594277 + ... + 594304.

It is an arithmetic number, because the mean of its divisors is an integer number (3565746).

Almost surely, 2^16640134 is an apocalyptic number.

16640134 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16640134 is a deficient number, since it is larger than the sum of its proper divisors (11885834).

16640134 is a wasteful number, since it uses less digits than its factorization.

16640134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1188590.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 16640134 is about 4079.2320355675. The cubic root of 16640134 is about 255.3008572535.

Adding to 16640134 its reverse (43104661), we get a palindrome (59744795).

The spelling of 16640134 in words is "sixteen million, six hundred forty thousand, one hundred thirty-four".