20933485 has 8 divisors (see below), whose sum is σ = 25217280. Its totient is φ = 16682064.

The previous prime is 20933483. The next prime is 20933489. The reversal of 20933485 is 58433902.

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 20933485 - 2¹ = 20933483 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20933485.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20933483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6645 + ... + 9274.

It is an arithmetic number, because the mean of its divisors is an integer number (3152160).

Almost surely, 2^20933485 is an apocalyptic number.

It is an amenable number.

20933485 is a deficient number, since it is larger than the sum of its proper divisors (4283795).

20933485 is a wasteful number, since it uses less digits than its factorization.

20933485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16187.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 20933485 is about 4575.3125576293. The cubic root of 20933485 is about 275.6008240956.

The spelling of 20933485 in words is "twenty million, nine hundred thirty-three thousand, four hundred eighty-five".