20727136 has 12 divisors (see below), whose sum is σ = 40806612. Its totient is φ = 10363552.

The previous prime is 20727103. The next prime is 20727137. The reversal of 20727136 is 63172702.

It is a super-2 number, since 2×20727136² = 859228333524992, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20727137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 323830 + ... + 323893.

It is an arithmetic number, because the mean of its divisors is an integer number (3400551).

Almost surely, 2^20727136 is an apocalyptic number.

It is an amenable number.

20727136 is a deficient number, since it is larger than the sum of its proper divisors (20079476).

20727136 is an equidigital number, since it uses as much as digits as its factorization.

20727136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647733 (or 647725 counting only the distinct ones).

The product of its (nonzero) digits is 3528, while the sum is 28.

The square root of 20727136 is about 4552.7064478176. The cubic root of 20727136 is about 274.6922662329.

Adding to 20727136 its reverse (63172702), we get a palindrome (83899838).

The spelling of 20727136 in words is "twenty million, seven hundred twenty-seven thousand, one hundred thirty-six".