20774441 has 4 divisors (see below), whose sum is σ = 20860884. Its totient is φ = 20688000.

The previous prime is 20774437. The next prime is 20774443. The reversal of 20774441 is 14447702.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 14447702 = 2 ⋅7223851.

It can be written as a sum of positive squares in 2 ways, for example, as 7958041 + 12816400 = 2821^2 + 3580^2 .

It is a cyclic number.

It is not a de Polignac number, because 20774441 - 2² = 20774437 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20774443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42860 + ... + 43341.

It is an arithmetic number, because the mean of its divisors is an integer number (5215221).

Almost surely, 2^20774441 is an apocalyptic number.

It is an amenable number.

20774441 is a deficient number, since it is larger than the sum of its proper divisors (86443).

20774441 is an equidigital number, since it uses as much as digits as its factorization.

20774441 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86442.

The product of its (nonzero) digits is 6272, while the sum is 29.

The square root of 20774441 is about 4557.8987483269. The cubic root of 20774441 is about 274.9010817785.

The spelling of 20774441 in words is "twenty million, seven hundred seventy-four thousand, four hundred forty-one".