20068445 has 8 divisors (see below), whose sum is σ = 24258744. Its totient is φ = 15937024.

The previous prime is 20068409. The next prime is 20068453. The reversal of 20068445 is 54486002.

It can be written as a sum of positive squares in 4 ways, for example, as 4084441 + 15984004 = 2021^2 + 3998^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20068445 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13964 + ... + 15333.

It is an arithmetic number, because the mean of its divisors is an integer number (3032343).

Almost surely, 2^20068445 is an apocalyptic number.

It is an amenable number.

20068445 is a deficient number, since it is larger than the sum of its proper divisors (4190299).

20068445 is a wasteful number, since it uses less digits than its factorization.

20068445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29439.

The product of its (nonzero) digits is 7680, while the sum is 29.

The square root of 20068445 is about 4479.7818027221. The cubic root of 20068445 is about 271.7510562891.

The spelling of 20068445 in words is "twenty million, sixty-eight thousand, four hundred forty-five".