20803436 has 6 divisors (see below), whose sum is σ = 36406020. Its totient is φ = 10401716.

The previous prime is 20803417. The next prime is 20803487. The reversal of 20803436 is 63430802.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2600426 + ... + 2600433.

It is an arithmetic number, because the mean of its divisors is an integer number (6067670).

Almost surely, 2^20803436 is an apocalyptic number.

It is an amenable number.

20803436 is a deficient number, since it is larger than the sum of its proper divisors (15602584).

20803436 is a wasteful number, since it uses less digits than its factorization.

20803436 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5200863 (or 5200861 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20803436 is about 4561.0783812603. The cubic root of 20803436 is about 275.0289159677.

The spelling of 20803436 in words is "twenty million, eight hundred three thousand, four hundred thirty-six".