20322845 has 8 divisors (see below), whose sum is σ = 24801120. Its totient is φ = 15982480.

The previous prime is 20322833. The next prime is 20322919. The reversal of 20322845 is 54822302.

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

It is not a de Polignac number, because 20322845 - 2⁶ = 20322781 is a prime.

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, 34151 + ... + 34740.

It is an arithmetic number, because the mean of its divisors is an integer number (3100140).

Almost surely, 2^20322845 is an apocalyptic number.

It is an amenable number.

20322845 is a deficient number, since it is larger than the sum of its proper divisors (4478275).

20322845 is an equidigital number, since it uses as much as digits as its factorization.

20322845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68955.

The product of its (nonzero) digits is 3840, while the sum is 26.

The square root of 20322845 is about 4508.0866229477. The cubic root of 20322845 is about 272.8945327374.

It can be divided in two parts, 203 and 22845, that multiplied together give a triangular number (4637535 = T₃₀₄₅).

The spelling of 20322845 in words is "twenty million, three hundred twenty-two thousand, eight hundred forty-five".