3728723 has 4 divisors (see below), whose sum is σ = 3733728. Its totient is φ = 3723720.

The previous prime is 3728719. The next prime is 3728743. The reversal of 3728723 is 3278273.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3278273 = 137 ⋅23929.

It is a cyclic number.

It is not a de Polignac number, because 3728723 - 2² = 3728719 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3728723.

It is not an unprimeable number, because it can be changed into a prime (3728713) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1136 + ... + 2957.

It is an arithmetic number, because the mean of its divisors is an integer number (933432).

Almost surely, 2^3728723 is an apocalyptic number.

3728723 is a deficient number, since it is larger than the sum of its proper divisors (5005).

3728723 is an equidigital number, since it uses as much as digits as its factorization.

3728723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5004.

The product of its digits is 14112, while the sum is 32.

The square root of 3728723 is about 1930.9901605135. The cubic root of 3728723 is about 155.0672340992.

The spelling of 3728723 in words is "three million, seven hundred twenty-eight thousand, seven hundred twenty-three".