20215214 has 8 divisors (see below), whose sum is σ = 31062528. Its totient is φ = 9861040.

The previous prime is 20215211. The next prime is 20215241. The reversal of 20215214 is 41251202.

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

It is a junction number, because it is equal to n+sod(n) for n = 20215192 and 20215201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20215211) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123182 + ... + 123345.

It is an arithmetic number, because the mean of its divisors is an integer number (3882816).

Almost surely, 2^20215214 is an apocalyptic number.

20215214 is a deficient number, since it is larger than the sum of its proper divisors (10847314).

20215214 is a wasteful number, since it uses less digits than its factorization.

20215214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246570.

The product of its (nonzero) digits is 160, while the sum is 17.

The square root of 20215214 is about 4496.1332275634. The cubic root of 20215214 is about 272.4119245141.

Adding to 20215214 its reverse (41251202), we get a palindrome (61466416).

The spelling of 20215214 in words is "twenty million, two hundred fifteen thousand, two hundred fourteen".