20741091 has 16 divisors (see below), whose sum is σ = 31699200. Its totient is φ = 11816928.

The previous prime is 20741069. The next prime is 20741107. The reversal of 20741091 is 19014702.

It is not a de Polignac number, because 20741091 - 2⁵ = 20741059 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20741041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6900 + ... + 9438.

It is an arithmetic number, because the mean of its divisors is an integer number (1981200).

Almost surely, 2^20741091 is an apocalyptic number.

20741091 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

20741091 is a deficient number, since it is larger than the sum of its proper divisors (10958109).

20741091 is a wasteful number, since it uses less digits than its factorization.

20741091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2938.

The product of its (nonzero) digits is 504, while the sum is 24.

The square root of 20741091 is about 4554.2387947933. The cubic root of 20741091 is about 274.7538999387.

Adding to 20741091 its reverse (19014702), we get a palindrome (39755793).

The spelling of 20741091 in words is "twenty million, seven hundred forty-one thousand, ninety-one".