16993634 has 16 divisors (see below), whose sum is σ = 29187648. Its totient is φ = 7269072.

The previous prime is 16993607. The next prime is 16993651. The reversal of 16993634 is 43639961.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 16993591 and 16993600.

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, 10397 + ... + 11919.

It is an arithmetic number, because the mean of its divisors is an integer number (1824228).

Almost surely, 2^16993634 is an apocalyptic number.

16993634 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16993634 is a deficient number, since it is larger than the sum of its proper divisors (12194014).

16993634 is a wasteful number, since it uses less digits than its factorization.

16993634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2329.

The product of its digits is 104976, while the sum is 41.

The square root of 16993634 is about 4122.3335624377. Note that the first 3 decimals coincide. The cubic root of 16993634 is about 257.0960594144.

The spelling of 16993634 in words is "sixteen million, nine hundred ninety-three thousand, six hundred thirty-four".