214451886 has 64 divisors (see below), whose sum is σ = 482236416. Its totient is φ = 63024000.

The previous prime is 214451873. The next prime is 214451891. The reversal of 214451886 is 688154412.

It is a super-2 number, since 2×214451886² = 91979222817913992, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 352995 + ... + 353601.

It is an arithmetic number, because the mean of its divisors is an integer number (7534944).

Almost surely, 2^214451886 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214451886, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (241118208).

214451886 is an abundant number, since it is smaller than the sum of its proper divisors (267784530).

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

214451886 is a wasteful number, since it uses less digits than its factorization.

214451886 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777.

The product of its digits is 61440, while the sum is 39.

The square root of 214451886 is about 14644.1758388787. The cubic root of 214451886 is about 598.5631228313.

The spelling of 214451886 in words is "two hundred fourteen million, four hundred fifty-one thousand, eight hundred eighty-six".