20215094 has 8 divisors (see below), whose sum is σ = 30406368. Its totient is φ = 10079640.

The previous prime is 20215093. The next prime is 20215099. The reversal of 20215094 is 49051202.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13037 + ... + 14504.

It is an arithmetic number, because the mean of its divisors is an integer number (3800796).

Almost surely, 2^20215094 is an apocalyptic number.

20215094 is a deficient number, since it is larger than the sum of its proper divisors (10191274).

20215094 is a wasteful number, since it uses less digits than its factorization.

20215094 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27910.

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 20215094 is about 4496.1198827433. The cubic root of 20215094 is about 272.4113854894.

Adding to 20215094 its reverse (49051202), we get a palindrome (69266296).

The spelling of 20215094 in words is "twenty million, two hundred fifteen thousand, ninety-four".