20064570 has 32 divisors (see below), whose sum is σ = 50690880. Its totient is φ = 5068800.

The previous prime is 20064563. The next prime is 20064587. The reversal of 20064570 is 7546002.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 20064570.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 17031 + ... + 18170.

It is an arithmetic number, because the mean of its divisors is an integer number (1584090).

Almost surely, 2^20064570 is an apocalyptic number.

20064570 is an abundant number, since it is smaller than the sum of its proper divisors (30626310).

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

20064570 is a wasteful number, since it uses less digits than its factorization.

20064570 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35230.

The product of its (nonzero) digits is 1680, while the sum is 24.

The square root of 20064570 is about 4479.3492830991. The cubic root of 20064570 is about 271.7335644318.

The spelling of 20064570 in words is "twenty million, sixty-four thousand, five hundred seventy".