20777241 has 8 divisors (see below), whose sum is σ = 29161120. Its totient is φ = 13122432.

The previous prime is 20777231. The next prime is 20777249. The reversal of 20777241 is 14277702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20777241 - 2⁵ = 20777209 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20777199 and 20777208.

It is not an unprimeable number, because it can be changed into a prime (20777249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 182200 + ... + 182313.

It is an arithmetic number, because the mean of its divisors is an integer number (3645140).

Almost surely, 2^20777241 is an apocalyptic number.

It is an amenable number.

20777241 is a deficient number, since it is larger than the sum of its proper divisors (8383879).

20777241 is a wasteful number, since it uses less digits than its factorization.

20777241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 364535.

The product of its (nonzero) digits is 5488, while the sum is 30.

The square root of 20777241 is about 4558.2058970608. The cubic root of 20777241 is about 274.9134317049.

The spelling of 20777241 in words is "twenty million, seven hundred seventy-seven thousand, two hundred forty-one".