20146215 has 8 divisors (see below), whose sum is σ = 32233968. Its totient is φ = 10744640.

The previous prime is 20146177. The next prime is 20146219. The reversal of 20146215 is 51264102.

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

It is not a de Polignac number, because 20146215 - 2⁸ = 20145959 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20146191 and 20146200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20146219) 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, 671526 + ... + 671555.

It is an arithmetic number, because the mean of its divisors is an integer number (4029246).

Almost surely, 2^20146215 is an apocalyptic number.

20146215 is a deficient number, since it is larger than the sum of its proper divisors (12087753).

20146215 is a wasteful number, since it uses less digits than its factorization.

20146215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1343089.

The product of its (nonzero) digits is 480, while the sum is 21.

The square root of 20146215 is about 4488.4535198663. The cubic root of 20146215 is about 272.1016371539.

The spelling of 20146215 in words is "twenty million, one hundred forty-six thousand, two hundred fifteen".