3728392 has 24 divisors (see below), whose sum is σ = 7316190. Its totient is φ = 1781120.

The previous prime is 3728377. The next prime is 3728393. The reversal of 3728392 is 2938273.

It can be written as a sum of positive squares in only one way, i.e., 3556996 + 171396 = 1886^2 + 414^2 .

It is a d-powerful number, because it can be written as 3¹³ + 7² + 2¹² + 8² + 3¹³ + 9⁶ + 2¹² .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728393) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3792 + ... + 4672.

Almost surely, 2^3728392 is an apocalyptic number.

It is an amenable number.

3728392 is a deficient number, since it is larger than the sum of its proper divisors (3587798).

3728392 is a wasteful number, since it uses less digits than its factorization.

3728392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 933 (or 906 counting only the distinct ones).

The product of its digits is 18144, while the sum is 34.

The square root of 3728392 is about 1930.9044512870. The cubic root of 3728392 is about 155.0626455065.

The spelling of 3728392 in words is "three million, seven hundred twenty-eight thousand, three hundred ninety-two".