214249820 has 24 divisors (see below), whose sum is σ = 451214064. Its totient is φ = 85454336.

The previous prime is 214249787. The next prime is 214249859. The reversal of 214249820 is 28942412.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 8114 + ... + 22233.

It is an arithmetic number, because the mean of its divisors is an integer number (18800586).

Almost surely, 2^214249820 is an apocalyptic number.

214249820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

214249820 is an abundant number, since it is smaller than the sum of its proper divisors (236964244).

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

214249820 is a wasteful number, since it uses less digits than its factorization.

214249820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30709 (or 30707 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 32.

The square root of 214249820 is about 14637.2750196203. The cubic root of 214249820 is about 598.3750662528.

The spelling of 214249820 in words is "two hundred fourteen million, two hundred forty-nine thousand, eight hundred twenty".