20746443 has 12 divisors (see below), whose sum is σ = 29386040. Its totient is φ = 13016832.

The previous prime is 20746441. The next prime is 20746487. The reversal of 20746443 is 34464702.

It is not a de Polignac number, because 20746443 - 2¹ = 20746441 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20746443.

It is not an unprimeable number, because it can be changed into a prime (20746441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11098 + ... + 12831.

Almost surely, 2^20746443 is an apocalyptic number.

20746443 is a deficient number, since it is larger than the sum of its proper divisors (8639597).

20746443 is a wasteful number, since it uses less digits than its factorization.

20746443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23966 (or 23949 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 30.

The square root of 20746443 is about 4554.8263413658. The cubic root of 20746443 is about 274.7775302676. Note that the first 3 decimals are identical.

The spelling of 20746443 in words is "twenty million, seven hundred forty-six thousand, four hundred forty-three".