20738365 has 4 divisors (see below), whose sum is σ = 24886044. Its totient is φ = 16590688.

The previous prime is 20738363. The next prime is 20738371. The reversal of 20738365 is 56383702.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5080516 + 15657849 = 2254^2 + 3957^2 .

It is a cyclic number.

It is not a de Polignac number, because 20738365 - 2¹ = 20738363 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20738365.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20738363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2073832 + ... + 2073841.

It is an arithmetic number, because the mean of its divisors is an integer number (6221511).

Almost surely, 2^20738365 is an apocalyptic number.

It is an amenable number.

20738365 is a deficient number, since it is larger than the sum of its proper divisors (4147679).

20738365 is an equidigital number, since it uses as much as digits as its factorization.

20738365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4147678.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 20738365 is about 4553.9395033312. The cubic root of 20738365 is about 274.7418624499.

The spelling of 20738365 in words is "twenty million, seven hundred thirty-eight thousand, three hundred sixty-five".