20687214 has 32 divisors (see below), whose sum is σ = 42666624. Its totient is φ = 6683040.

The previous prime is 20687207. The next prime is 20687243. The reversal of 20687214 is 41278602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 46477 + ... + 46919.

It is an arithmetic number, because the mean of its divisors is an integer number (1333332).

Almost surely, 2^20687214 is an apocalyptic number.

20687214 is an abundant number, since it is smaller than the sum of its proper divisors (21979410).

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

20687214 is a wasteful number, since it uses less digits than its factorization.

20687214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672.

The product of its (nonzero) digits is 5376, while the sum is 30.

The square root of 20687214 is about 4548.3199095930. The cubic root of 20687214 is about 274.5157936640.

The spelling of 20687214 in words is "twenty million, six hundred eighty-seven thousand, two hundred fourteen".