20371369 has 8 divisors (see below), whose sum is σ = 21195720. Its totient is φ = 19555200.

The previous prime is 20371367. The next prime is 20371381. The reversal of 20371369 is 96317302.

It can be written as a sum of positive squares in 4 ways, for example, as 345744 + 20025625 = 588^2 + 4475^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20371369 - 2¹ = 20371367 is a prime.

It is a super-3 number, since 3×20371369³ (a number of 23 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

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 20371369.

It is not an unprimeable number, because it can be changed into a prime (20371367) 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, 3309 + ... + 7189.

It is an arithmetic number, because the mean of its divisors is an integer number (2649465).

Almost surely, 2^20371369 is an apocalyptic number.

20371369 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

20371369 is a deficient number, since it is larger than the sum of its proper divisors (824351).

20371369 is a wasteful number, since it uses less digits than its factorization.

20371369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4091.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 20371369 is about 4513.4652984154. The cubic root of 20371369 is about 273.1115530282. Note that the first 3 decimals are identical.

The spelling of 20371369 in words is "twenty million, three hundred seventy-one thousand, three hundred sixty-nine".