20054215 has 8 divisors (see below), whose sum is σ = 25331760. Its totient is φ = 15198912.

The previous prime is 20054201. The next prime is 20054227. The reversal of 20054215 is 51245002.

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 20054215 - 2¹¹ = 20052167 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is a junction number, because it is equal to n+sod(n) for n = 20054192 and 20054201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 105454 + ... + 105643.

It is an arithmetic number, because the mean of its divisors is an integer number (3166470).

Almost surely, 2^20054215 is an apocalyptic number.

20054215 is a deficient number, since it is larger than the sum of its proper divisors (5277545).

20054215 is a wasteful number, since it uses less digits than its factorization.

20054215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211121.

The product of its (nonzero) digits is 400, while the sum is 19.

The square root of 20054215 is about 4478.1932740783. The cubic root of 20054215 is about 271.6868106223.

Adding to 20054215 its reverse (51245002), we get a palindrome (71299217).

The spelling of 20054215 in words is "twenty million, fifty-four thousand, two hundred fifteen".