20799776 has 24 divisors (see below), whose sum is σ = 41062140. Its totient is φ = 10371328.

The previous prime is 20799769. The next prime is 20799799. The reversal of 20799776 is 67799702.

It can be written as a sum of positive squares in 2 ways, for example, as 19536400 + 1263376 = 4420^2 + 1124^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 20799776.

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, 15650 + ... + 16926.

Almost surely, 2^20799776 is an apocalyptic number.

It is an amenable number.

20799776 is a deficient number, since it is larger than the sum of its proper divisors (20262364).

20799776 is a wasteful number, since it uses less digits than its factorization.

20799776 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1796 (or 1788 counting only the distinct ones).

The product of its (nonzero) digits is 333396, while the sum is 47.

The square root of 20799776 is about 4560.6771427059. The cubic root of 20799776 is about 275.0127861824.

The spelling of 20799776 in words is "twenty million, seven hundred ninety-nine thousand, seven hundred seventy-six".