3728425 has 12 divisors (see below), whose sum is σ = 4648140. Its totient is φ = 2966720.

The previous prime is 3728411. The next prime is 3728429. The reversal of 3728425 is 5248273.

It can be written as a sum of positive squares in 6 ways, for example, as 331776 + 3396649 = 576^2 + 1843^2 .

It is not a de Polignac number, because 3728425 - 2⁵ = 3728393 is a prime.

It is a d-powerful number, because it can be written as 3¹³ + 7² + 2⁵ + 8⁵ + 4⁶ + 2²¹ + 5 .

It is not an unprimeable number, because it can be changed into a prime (3728429) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7071 + ... + 7579.

It is an arithmetic number, because the mean of its divisors is an integer number (387345).

Almost surely, 2^3728425 is an apocalyptic number.

It is an amenable number.

3728425 is a deficient number, since it is larger than the sum of its proper divisors (919715).

3728425 is a wasteful number, since it uses less digits than its factorization.

3728425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 812 (or 807 counting only the distinct ones).

The product of its digits is 13440, while the sum is 31.

The square root of 3728425 is about 1930.9129964864. The cubic root of 3728425 is about 155.0631029917.

The spelling of 3728425 in words is "three million, seven hundred twenty-eight thousand, four hundred twenty-five".