20741575 has 12 divisors (see below), whose sum is σ = 25782328. Its totient is φ = 16552800.

The previous prime is 20741569. The next prime is 20741579. The reversal of 20741575 is 57514702.

It is not a de Polignac number, because 20741575 - 2⁷ = 20741447 is a prime.

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20741579) 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, 13549 + ... + 15001.

Almost surely, 2^20741575 is an apocalyptic number.

20741575 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

20741575 is a deficient number, since it is larger than the sum of its proper divisors (5040753).

20741575 is a wasteful number, since it uses less digits than its factorization.

20741575 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2034 (or 2029 counting only the distinct ones).

The product of its (nonzero) digits is 9800, while the sum is 31.

The square root of 20741575 is about 4554.2919317936. The cubic root of 20741575 is about 274.7560370788.

It can be divided in two parts, 20741 and 575, that added together give a square (21316 = 146²).

The spelling of 20741575 in words is "twenty million, seven hundred forty-one thousand, five hundred seventy-five".