20462845 has 8 divisors (see below), whose sum is σ = 26444376. Its totient is φ = 15110976.

The previous prime is 20462837. The next prime is 20462861. The reversal of 20462845 is 54826402.

It can be written as a sum of positive squares in 4 ways, for example, as 293764 + 20169081 = 542^2 + 4491^2 .

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 20462845 - 2³ = 20462837 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, 157342 + ... + 157471.

It is an arithmetic number, because the mean of its divisors is an integer number (3305547).

Almost surely, 2^20462845 is an apocalyptic number.

It is an amenable number.

20462845 is a deficient number, since it is larger than the sum of its proper divisors (5981531).

20462845 is a wasteful number, since it uses less digits than its factorization.

20462845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 314831.

The product of its (nonzero) digits is 15360, while the sum is 31.

The square root of 20462845 is about 4523.5876248836. The cubic root of 20462845 is about 273.5197378436.

The spelling of 20462845 in words is "twenty million, four hundred sixty-two thousand, eight hundred forty-five".