20803016 has 16 divisors (see below), whose sum is σ = 42006300. Its totient is φ = 9601344.

The previous prime is 20803007. The next prime is 20803021. The reversal of 20803016 is 61030802.

It can be written as a sum of positive squares in 2 ways, for example, as 20666116 + 136900 = 4546^2 + 370^2 .

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, 99911 + ... + 100118.

Almost surely, 2^20803016 is an apocalyptic number.

20803016 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20803016 is an abundant number, since it is smaller than the sum of its proper divisors (21203284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20803016 is a wasteful number, since it uses less digits than its factorization.

20803016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 200048 (or 200044 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 20803016 is about 4561.0323392846. The cubic root of 20803016 is about 275.0270651048.

Adding to 20803016 its reverse (61030802), we get a palindrome (81833818).

The spelling of 20803016 in words is "twenty million, eight hundred three thousand, sixteen".