20803396 has 12 divisors (see below), whose sum is σ = 36781948. Its totient is φ = 10294272.

The previous prime is 20803373. The next prime is 20803399. The reversal of 20803396 is 69330802.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 16240900 + 4562496 = 4030^2 + 2136^2 .

It is not an unprimeable number, because it can be changed into a prime (20803399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26421 + ... + 27196.

Almost surely, 2^20803396 is an apocalyptic number.

It is an amenable number.

20803396 is a deficient number, since it is larger than the sum of its proper divisors (15978552).

20803396 is a wasteful number, since it uses less digits than its factorization.

20803396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53718 (or 53716 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 31.

The square root of 20803396 is about 4561.0739963303. The cubic root of 20803396 is about 275.0287396961.

It can be divided in two parts, 2080 and 3396, that added together give a square (5476 = 74²).

The spelling of 20803396 in words is "twenty million, eight hundred three thousand, three hundred ninety-six".