20802616 has 8 divisors (see below), whose sum is σ = 39004920. Its totient is φ = 10401304.

The previous prime is 20802569. The next prime is 20802631. The reversal of 20802616 is 61620802.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 1300156 + ... + 1300171.

It is an arithmetic number, because the mean of its divisors is an integer number (4875615).

Almost surely, 2^20802616 is an apocalyptic number.

It is an amenable number.

20802616 is a deficient number, since it is larger than the sum of its proper divisors (18202304).

20802616 is a wasteful number, since it uses less digits than its factorization.

20802616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600333 (or 2600329 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 25.

The square root of 20802616 is about 4560.9884893518. The cubic root of 20802616 is about 275.0253023551.

The spelling of 20802616 in words is "twenty million, eight hundred two thousand, six hundred sixteen".