214154220 has 96 divisors (see below), whose sum is σ = 687633408. Its totient is φ = 48782592.

The previous prime is 214154209. The next prime is 214154243. The reversal of 214154220 is 22451412.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 155977 + ... + 157343.

It is an arithmetic number, because the mean of its divisors is an integer number (7162848).

Almost surely, 2^214154220 is an apocalyptic number.

214154220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 214154220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (343816704).

214154220 is an abundant number, since it is smaller than the sum of its proper divisors (473479188).

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

214154220 is a wasteful number, since it uses less digits than its factorization.

214154220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1759 (or 1757 counting only the distinct ones).

The product of its (nonzero) digits is 640, while the sum is 21.

The square root of 214154220 is about 14634.0090200874. The cubic root of 214154220 is about 598.2860530830.

The spelling of 214154220 in words is "two hundred fourteen million, one hundred fifty-four thousand, two hundred twenty".