20156214 has 16 divisors (see below), whose sum is σ = 43413552. Its totient is φ = 6201888.

The previous prime is 20156183. The next prime is 20156219. The reversal of 20156214 is 41265102.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20156219) 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, 129129 + ... + 129284.

It is an arithmetic number, because the mean of its divisors is an integer number (2713347).

Almost surely, 2^20156214 is an apocalyptic number.

20156214 is an abundant number, since it is smaller than the sum of its proper divisors (23257338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20156214 is a wasteful number, since it uses less digits than its factorization.

20156214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258431.

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

The square root of 20156214 is about 4489.5672397237. The cubic root of 20156214 is about 272.1466463409.

The spelling of 20156214 in words is "twenty million, one hundred fifty-six thousand, two hundred fourteen".