20741475 has 12 divisors (see below), whose sum is σ = 34292696. Its totient is φ = 11062080.

The previous prime is 20741473. The next prime is 20741477. The reversal of 20741475 is 57414702.

It is an interprime number because it is at equal distance from previous prime (20741473) and next prime (20741477).

It is not a de Polignac number, because 20741475 - 2¹ = 20741473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20741471) 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, 138202 + ... + 138351.

Almost surely, 2^20741475 is an apocalyptic number.

20741475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20741475 is a deficient number, since it is larger than the sum of its proper divisors (13551221).

20741475 is a wasteful number, since it uses less digits than its factorization.

20741475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 276566 (or 276561 counting only the distinct ones).

The product of its (nonzero) digits is 7840, while the sum is 30.

The square root of 20741475 is about 4554.2809531253. The cubic root of 20741475 is about 274.7555955236.

The spelling of 20741475 in words is "twenty million, seven hundred forty-one thousand, four hundred seventy-five".