20492936 has 16 divisors (see below), whose sum is σ = 38489100. Its totient is φ = 10229184.

The previous prime is 20492929. The next prime is 20492947. The reversal of 20492936 is 63929402.

It can be written as a sum of positive squares in 2 ways, for example, as 14212900 + 6280036 = 3770^2 + 2506^2 .

It is a Smith number, since the sum of its digits (35) coincides with the sum of the digits of its prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 20492896 and 20492905.

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, 3866 + ... + 7478.

Almost surely, 2^20492936 is an apocalyptic number.

It is an amenable number.

20492936 is a deficient number, since it is larger than the sum of its proper divisors (17996164).

20492936 is a wasteful number, since it uses less digits than its factorization.

20492936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4328 (or 4324 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 20492936 is about 4526.9124135552. The cubic root of 20492936 is about 273.6537441587.

The spelling of 20492936 in words is "twenty million, four hundred ninety-two thousand, nine hundred thirty-six".