20744363 has 4 divisors (see below), whose sum is σ = 21413568. Its totient is φ = 20075160.

The previous prime is 20744327. The next prime is 20744377. The reversal of 20744363 is 36344702.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 36344702 = 2 ⋅18172351.

It is a cyclic number.

It is not a de Polignac number, because 20744363 - 2¹⁴ = 20727979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20744393) 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, 334556 + ... + 334617.

It is an arithmetic number, because the mean of its divisors is an integer number (5353392).

Almost surely, 2^20744363 is an apocalyptic number.

20744363 is a deficient number, since it is larger than the sum of its proper divisors (669205).

20744363 is an equidigital number, since it uses as much as digits as its factorization.

20744363 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 669204.

The product of its (nonzero) digits is 12096, while the sum is 29.

The square root of 20744363 is about 4554.5980064107. The cubic root of 20744363 is about 274.7683470651.

The spelling of 20744363 in words is "twenty million, seven hundred forty-four thousand, three hundred sixty-three".