16140634 has 8 divisors (see below), whose sum is σ = 24801588. Its totient is φ = 7873440.

The previous prime is 16140613. The next prime is 16140637. The reversal of 16140634 is 43604161.

It can be written as a sum of positive squares in 2 ways, for example, as 14326225 + 1814409 = 3785^2 + 1347^2 .

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 = 16140599 and 16140608.

It is not an unprimeable number, because it can be changed into a prime (16140637) 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 3 ways as a sum of consecutive naturals, for example, 98337 + ... + 98500.

Almost surely, 2^16140634 is an apocalyptic number.

16140634 is a deficient number, since it is larger than the sum of its proper divisors (8660954).

16140634 is a wasteful number, since it uses less digits than its factorization.

16140634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196880.

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

The square root of 16140634 is about 4017.5407900854. The cubic root of 16140634 is about 252.7203396426.

Adding to 16140634 its reverse (43604161), we get a palindrome (59744795).

The spelling of 16140634 in words is "sixteen million, one hundred forty thousand, six hundred thirty-four".