16509034 has 8 divisors (see below), whose sum is σ = 24821280. Its totient is φ = 8235276.

The previous prime is 16509011. The next prime is 16509037. The reversal of 16509034 is 43090561.

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

It is a super-2 number, since 2×16509034² = 545096407226312, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 16508993 and 16509011.

It is not an unprimeable number, because it can be changed into a prime (16509037) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8524 + ... + 10279.

It is an arithmetic number, because the mean of its divisors is an integer number (3102660).

Almost surely, 2^16509034 is an apocalyptic number.

16509034 is a deficient number, since it is larger than the sum of its proper divisors (8312246).

16509034 is a wasteful number, since it uses less digits than its factorization.

16509034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19244.

The product of its (nonzero) digits is 3240, while the sum is 28.

The square root of 16509034 is about 4063.1310586788. The cubic root of 16509034 is about 254.6286225374.

Adding to 16509034 its reverse (43090561), we get a palindrome (59599595).

The spelling of 16509034 in words is "sixteen million, five hundred nine thousand, thirty-four".