16493706 has 80 divisors (see below), whose sum is σ = 40223304. Its totient is φ = 5031936.

The previous prime is 16493683. The next prime is 16493707. The reversal of 16493706 is 60739461.

16493706 is a `hidden beast` number, since 1 + 649 + 3 + 7 + 0 + 6 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 13286025 + 3207681 = 3645^2 + 1791^2 .

It is a super-2 number, since 2×16493706² = 544084675228872, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16493707) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 145906 + ... + 146018.

Almost surely, 2^16493706 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16493706, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20111652).

16493706 is an abundant number, since it is smaller than the sum of its proper divisors (23729598).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16493706 is a wasteful number, since it uses less digits than its factorization.

16493706 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 27216, while the sum is 36.

The square root of 16493706 is about 4061.2443905778. The cubic root of 16493706 is about 254.5497938577.

The spelling of 16493706 in words is "sixteen million, four hundred ninety-three thousand, seven hundred six".