20494912 has 28 divisors (see below), whose sum is σ = 40818816. Its totient is φ = 10209920.

The previous prime is 20494907. The next prime is 20494987. The reversal of 20494912 is 21949402.

It is a happy number.

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, 27213 + ... + 27955.

Almost surely, 2^20494912 is an apocalyptic number.

It is an amenable number.

20494912 is a deficient number, since it is larger than the sum of its proper divisors (20323904).

20494912 is an equidigital number, since it uses as much as digits as its factorization.

20494912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1186 (or 1176 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 20494912 is about 4527.1306585960. The cubic root of 20494912 is about 273.6625394239.

The spelling of 20494912 in words is "twenty million, four hundred ninety-four thousand, nine hundred twelve".