20736801 has 6 divisors (see below), whose sum is σ = 29953170. Its totient is φ = 13824528.

The previous prime is 20736791. The next prime is 20736853. The reversal of 20736801 is 10863702.

It can be written as a sum of positive squares in only one way, i.e., 14861025 + 5875776 = 3855^2 + 2424^2 .

It is not a de Polignac number, because 20736801 - 2⁷ = 20736673 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20736871) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1152036 + ... + 1152053.

It is an arithmetic number, because the mean of its divisors is an integer number (4992195).

Almost surely, 2^20736801 is an apocalyptic number.

It is an amenable number.

20736801 is a deficient number, since it is larger than the sum of its proper divisors (9216369).

20736801 is a wasteful number, since it uses less digits than its factorization.

20736801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2304095 (or 2304092 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 27.

The square root of 20736801 is about 4553.7677806406. The cubic root of 20736801 is about 274.7349556522.

The spelling of 20736801 in words is "twenty million, seven hundred thirty-six thousand, eight hundred one".