3728214 has 48 divisors (see below), whose sum is σ = 9644400. Its totient is φ = 1064448.

The previous prime is 3728203. The next prime is 3728243. The reversal of 3728214 is 4128273.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1942 + ... + 3350.

It is an arithmetic number, because the mean of its divisors is an integer number (200925).

Almost surely, 2^3728214 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3728214, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4822200).

3728214 is an abundant number, since it is smaller than the sum of its proper divisors (5916186).

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

3728214 is a wasteful number, since it uses less digits than its factorization.

3728214 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1434 (or 1421 counting only the distinct ones).

The product of its digits is 2688, while the sum is 27.

The square root of 3728214 is about 1930.8583583474. The cubic root of 3728214 is about 155.0601778126.

The spelling of 3728214 in words is "three million, seven hundred twenty-eight thousand, two hundred fourteen".