20845376 has 14 divisors (see below), whose sum is σ = 41365170. Its totient is φ = 10422656.

The previous prime is 20845373. The next prime is 20845381. The reversal of 20845376 is 67354802.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 10758400 + 10086976 = 3280^2 + 3176^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20845373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 162791 + ... + 162918.

It is an arithmetic number, because the mean of its divisors is an integer number (2954655).

Almost surely, 2^20845376 is an apocalyptic number.

It is an amenable number.

20845376 is a deficient number, since it is larger than the sum of its proper divisors (20519794).

20845376 is an equidigital number, since it uses as much as digits as its factorization.

20845376 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325721 (or 325711 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 35.

The square root of 20845376 is about 4565.6736633272. The cubic root of 20845376 is about 275.2136125410.

The spelling of 20845376 in words is "twenty million, eight hundred forty-five thousand, three hundred seventy-six".