20727141 has 32 divisors (see below), whose sum is σ = 30205440. Its totient is φ = 12612096.

The previous prime is 20727137. The next prime is 20727167. The reversal of 20727141 is 14172702.

20727141 is a nontrivial binomial coefficient, being equal to C(6439, 2).

It is not a de Polignac number, because 20727141 - 2² = 20727137 is a prime.

It is a super-2 number, since 2×20727141² = 859228748067762, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20717141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 151225 + ... + 151361.

It is an arithmetic number, because the mean of its divisors is an integer number (943920).

Almost surely, 2^20727141 is an apocalyptic number.

20727141 is the 6438-th triangular number.

It is an amenable number.

20727141 is a deficient number, since it is larger than the sum of its proper divisors (9478299).

20727141 is a wasteful number, since it uses less digits than its factorization.

20727141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 784, while the sum is 24.

The square root of 20727141 is about 4552.7069969415. The cubic root of 20727141 is about 274.6922883208.

Adding to 20727141 its reverse (14172702), we get a palindrome (34899843).

The spelling of 20727141 in words is "twenty million, seven hundred twenty-seven thousand, one hundred forty-one".