21196036 has 12 divisors (see below), whose sum is σ = 37701580. Its totient is φ = 10424160.

The previous prime is 21196009. The next prime is 21196067. The reversal of 21196036 is 63069112.

It can be written as a sum of positive squares in 2 ways, for example, as 3218436 + 17977600 = 1794^2 + 4240^2 .

It is a super-2 number, since 2×21196036² = 898543884226592, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 21195995 and 21196013.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43191 + ... + 43678.

Almost surely, 2^21196036 is an apocalyptic number.

It is an amenable number.

21196036 is a deficient number, since it is larger than the sum of its proper divisors (16505544).

21196036 is a wasteful number, since it uses less digits than its factorization.

21196036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86934 (or 86932 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 21196036 is about 4603.9152902720. The cubic root of 21196036 is about 276.7482496781.

The spelling of 21196036 in words is "twenty-one million, one hundred ninety-six thousand, thirty-six".