20801676 has 72 divisors (see below), whose sum is σ = 59811696. Its totient is φ = 5591040.

The previous prime is 20801647. The next prime is 20801681. The reversal of 20801676 is 67610802.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8956 + ... + 11036.

It is an arithmetic number, because the mean of its divisors is an integer number (830718).

Almost surely, 2^20801676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20801676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29905848).

20801676 is an abundant number, since it is smaller than the sum of its proper divisors (39010020).

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

20801676 is a wasteful number, since it uses less digits than its factorization.

20801676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2119 (or 2110 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 30.

The square root of 20801676 is about 4560.8854403504. The cubic root of 20801676 is about 275.0211598043.

The spelling of 20801676 in words is "twenty million, eight hundred one thousand, six hundred seventy-six".