20779296 has 24 divisors (see below), whose sum is σ = 54545904. Its totient is φ = 6926400.

The previous prime is 20779289. The next prime is 20779301. The reversal of 20779296 is 69297702.

It is a tau number, because it is divible by the number of its divisors (24).

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, 108130 + ... + 108321.

It is an arithmetic number, because the mean of its divisors is an integer number (2272746).

Almost surely, 2^20779296 is an apocalyptic number.

It is an amenable number.

20779296 is an abundant number, since it is smaller than the sum of its proper divisors (33766608).

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

20779296 is a wasteful number, since it uses less digits than its factorization.

20779296 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 216464 (or 216456 counting only the distinct ones).

The product of its (nonzero) digits is 95256, while the sum is 42.

The square root of 20779296 is about 4558.4313091238. The cubic root of 20779296 is about 274.9224949627.

The spelling of 20779296 in words is "twenty million, seven hundred seventy-nine thousand, two hundred ninety-six".