20356941 has 8 divisors (see below), whose sum is σ = 29610144. Its totient is φ = 12337520.

The previous prime is 20356937. The next prime is 20356943. The reversal of 20356941 is 14965302.

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 20356941 - 2² = 20356937 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20356899 and 20356908.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20356943) 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, 308406 + ... + 308471.

It is an arithmetic number, because the mean of its divisors is an integer number (3701268).

Almost surely, 2^20356941 is an apocalyptic number.

It is an amenable number.

20356941 is a deficient number, since it is larger than the sum of its proper divisors (9253203).

20356941 is a wasteful number, since it uses less digits than its factorization.

20356941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 616891.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 20356941 is about 4511.8666868603. The cubic root of 20356941 is about 273.0470608132.

The spelling of 20356941 in words is "twenty million, three hundred fifty-six thousand, nine hundred forty-one".