20446361 has 8 divisors (see below), whose sum is σ = 22055880. Its totient is φ = 18842112.

The previous prime is 20446357. The next prime is 20446369. The reversal of 20446361 is 16364402.

It can be written as a sum of positive squares in 4 ways, for example, as 697225 + 19749136 = 835^2 + 4444^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 20446361 - 2² = 20446357 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20446361.

It is not an unprimeable number, because it can be changed into a prime (20446369) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11231 + ... + 12923.

It is an arithmetic number, because the mean of its divisors is an integer number (2756985).

Almost surely, 2^20446361 is an apocalyptic number.

It is an amenable number.

20446361 is a deficient number, since it is larger than the sum of its proper divisors (1609519).

20446361 is a wasteful number, since it uses less digits than its factorization.

20446361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2635.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 20446361 is about 4521.7652526419. The cubic root of 20446361 is about 273.4462728135.

The spelling of 20446361 in words is "twenty million, four hundred forty-six thousand, three hundred sixty-one".