20741445 has 48 divisors (see below), whose sum is σ = 40098240. Its totient is φ = 9856512.

The previous prime is 20741401. The next prime is 20741447. The reversal of 20741445 is 54414702.

20741445 is a `hidden beast` number, since 207 + 414 + 45 = 666.

It is not a de Polignac number, because 20741445 - 2⁶ = 20741381 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20741447) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 13822 + ... + 15248.

It is an arithmetic number, because the mean of its divisors is an integer number (835380).

Almost surely, 2^20741445 is an apocalyptic number.

It is an amenable number.

20741445 is a deficient number, since it is larger than the sum of its proper divisors (19356795).

20741445 is a wasteful number, since it uses less digits than its factorization.

20741445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1474 (or 1471 counting only the distinct ones).

The product of its (nonzero) digits is 4480, while the sum is 27.

The square root of 20741445 is about 4554.2776595197. The cubic root of 20741445 is about 274.7554630568.

The spelling of 20741445 in words is "twenty million, seven hundred forty-one thousand, four hundred forty-five".