20933395 has 16 divisors (see below), whose sum is σ = 28827648. Its totient is φ = 14294880.

The previous prime is 20933333. The next prime is 20933399. The reversal of 20933395 is 59333902.

It is not a de Polignac number, because 20933395 - 2¹¹ = 20931347 is a prime.

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 20933395.

It is not an unprimeable number, because it can be changed into a prime (20933399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8382 + ... + 10588.

It is an arithmetic number, because the mean of its divisors is an integer number (1801728).

Almost surely, 2^20933395 is an apocalyptic number.

20933395 is a deficient number, since it is larger than the sum of its proper divisors (7894253).

20933395 is a wasteful number, since it uses less digits than its factorization.

20933395 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2490.

The product of its (nonzero) digits is 21870, while the sum is 34.

The square root of 20933395 is about 4575.3027222251. The cubic root of 20933395 is about 275.6004291286.

The spelling of 20933395 in words is "twenty million, nine hundred thirty-three thousand, three hundred ninety-five".