3728145 has 8 divisors (see below), whose sum is σ = 5965056. Its totient is φ = 1988336.

The previous prime is 3728141. The next prime is 3728149. The reversal of 3728145 is 5418273.

It is an interprime number because it is at equal distance from previous prime (3728141) and next prime (3728149).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3728145 - 2² = 3728141 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3728141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 124257 + ... + 124286.

It is an arithmetic number, because the mean of its divisors is an integer number (745632).

Almost surely, 2^3728145 is an apocalyptic number.

It is an amenable number.

3728145 is a deficient number, since it is larger than the sum of its proper divisors (2236911).

3728145 is a wasteful number, since it uses less digits than its factorization.

3728145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 248551.

The product of its digits is 6720, while the sum is 30.

The square root of 3728145 is about 1930.8404905636. The cubic root of 3728145 is about 155.0592212135.

It can be divided in two parts, 37 and 28145, that added together give a palindrome (28182).

The spelling of 3728145 in words is "three million, seven hundred twenty-eight thousand, one hundred forty-five".