20362261 has 8 divisors (see below), whose sum is σ = 20640384. Its totient is φ = 20086080.

The previous prime is 20362259. The next prime is 20362271. The reversal of 20362261 is 16226302.

It is a happy number.

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 20362261 - 2¹ = 20362259 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20362201) 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, 41226 + ... + 41716.

It is an arithmetic number, because the mean of its divisors is an integer number (2580048).

Almost surely, 2^20362261 is an apocalyptic number.

It is an amenable number.

20362261 is a deficient number, since it is larger than the sum of its proper divisors (278123).

20362261 is a wasteful number, since it uses less digits than its factorization.

20362261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 971.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 20362261 is about 4512.4562047736. The cubic root of 20362261 is about 273.0708444102.

Adding to 20362261 its reverse (16226302), we get a palindrome (36588563).

The spelling of 20362261 in words is "twenty million, three hundred sixty-two thousand, two hundred sixty-one".