20772696 has 64 divisors (see below), whose sum is σ = 60353280. Its totient is φ = 5834880.

The previous prime is 20772667. The next prime is 20772707. The reversal of 20772696 is 69627702.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9235 + ... + 11261.

It is an arithmetic number, because the mean of its divisors is an integer number (943020).

Almost surely, 2^20772696 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 20772696, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (30176640).

20772696 is an abundant number, since it is smaller than the sum of its proper divisors (39580584).

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

20772696 is a wasteful number, since it uses less digits than its factorization.

20772696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2104 (or 2100 counting only the distinct ones).

The product of its (nonzero) digits is 63504, while the sum is 39.

The square root of 20772696 is about 4557.7073183784. The cubic root of 20772696 is about 274.8933845667.

The spelling of 20772696 in words is "twenty million, seven hundred seventy-two thousand, six hundred ninety-six".