20069816 has 16 divisors (see below), whose sum is σ = 40525800. Its totient is φ = 9262944.

The previous prime is 20069813. The next prime is 20069831. The reversal of 20069816 is 61896002.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20069813) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 96386 + ... + 96593.

Almost surely, 2^20069816 is an apocalyptic number.

20069816 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

20069816 is an abundant number, since it is smaller than the sum of its proper divisors (20455984).

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

20069816 is a wasteful number, since it uses less digits than its factorization.

20069816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192998 (or 192994 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 20069816 is about 4479.9348209544. The cubic root of 20069816 is about 271.7572444818.

The spelling of 20069816 in words is "twenty million, sixty-nine thousand, eight hundred sixteen".