20367261 has 8 divisors (see below), whose sum is σ = 30173760. Its totient is φ = 13578156.

The previous prime is 20367247. The next prime is 20367293. The reversal of 20367261 is 16276302.

It is a happy number.

It is not a de Polignac number, because 20367261 - 2¹⁰ = 20366237 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: 754343 = 20367261 / (2 + 0 + 3 + 6 + 7 + 2 + 6 + 1).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20357261) 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, 377145 + ... + 377198.

It is an arithmetic number, because the mean of its divisors is an integer number (3771720).

Almost surely, 2^20367261 is an apocalyptic number.

It is an amenable number.

20367261 is a deficient number, since it is larger than the sum of its proper divisors (9806499).

20367261 is an equidigital number, since it uses as much as digits as its factorization.

20367261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 754352 (or 754346 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 20367261 is about 4513.0101927649. The cubic root of 20367261 is about 273.0931936389.

The spelling of 20367261 in words is "twenty million, three hundred sixty-seven thousand, two hundred sixty-one".