20803802 has 4 divisors (see below), whose sum is σ = 31205706. Its totient is φ = 10401900.

The previous prime is 20803793. The next prime is 20803807. The reversal of 20803802 is 20830802.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 20784481 + 19321 = 4559^2 + 139^2 .

It is not an unprimeable number, because it can be changed into a prime (20803807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5200949 + ... + 5200952.

Almost surely, 2^20803802 is an apocalyptic number.

20803802 is a deficient number, since it is larger than the sum of its proper divisors (10401904).

20803802 is a wasteful number, since it uses less digits than its factorization.

20803802 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10401903.

The product of its (nonzero) digits is 768, while the sum is 23.

The square root of 20803802 is about 4561.1185031744. The cubic root of 20803802 is about 275.0305288422.

Subtracting 20803802 from its reverse (20830802), we obtain a cube (27000 = 30³).

The spelling of 20803802 in words is "twenty million, eight hundred three thousand, eight hundred two".