20364723 has 8 divisors (see below), whose sum is σ = 30170000. Its totient is φ = 13576464.

The previous prime is 20364709. The next prime is 20364739. The reversal of 20364723 is 32746302.

It is not a de Polignac number, because 20364723 - 2¹⁰ = 20363699 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 754249 = 20364723 / (2 + 0 + 3 + 6 + 4 + 7 + 2 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20368723) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 377098 + ... + 377151.

It is an arithmetic number, because the mean of its divisors is an integer number (3771250).

Almost surely, 2^20364723 is an apocalyptic number.

20364723 is a deficient number, since it is larger than the sum of its proper divisors (9805277).

20364723 is an equidigital number, since it uses as much as digits as its factorization.

20364723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754258 (or 754252 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 27.

The square root of 20364723 is about 4512.7289969596. The cubic root of 20364723 is about 273.0818496275.

The spelling of 20364723 in words is "twenty million, three hundred sixty-four thousand, seven hundred twenty-three".