16641936 has 50 divisors (see below), whose sum is σ = 48170342. Its totient is φ = 5546880.

The previous prime is 16641931. The next prime is 16641943. The reversal of 16641936 is 63914661.

16641936 is a `hidden beast` number, since 1 + 6 + 641 + 9 + 3 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 14017536 + 2624400 = 3744^2 + 1620^2 .

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 16641936.

It is not an unprimeable number, because it can be changed into a prime (16641931) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 5125 + ... + 7716.

Almost surely, 2^16641936 is an apocalyptic number.

16641936 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

16641936 is an abundant number, since it is smaller than the sum of its proper divisors (31528406).

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

16641936 is a wasteful number, since it uses less digits than its factorization.

16641936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12861 (or 12846 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 16641936 is about 4079.4529044959. The cubic root of 16641936 is about 255.3100726348.

It can be divided in two parts, 1664 and 1936, that added together give a square (3600 = 60²).

The spelling of 16641936 in words is "sixteen million, six hundred forty-one thousand, nine hundred thirty-six".