3728823 has 16 divisors (see below), whose sum is σ = 5836800. Its totient is φ = 2072736.

The previous prime is 3728821. The next prime is 3728861. The reversal of 3728823 is 3288273.

It is a happy number.

It is not a de Polignac number, because 3728823 - 2¹ = 3728821 is a prime.

It is a super-3 number, since 3×3728823³ (a number of 21 digits) contains 333 as substring.

It is a d-powerful number, because it can be written as 3⁷ + 7³ + 2 + 8⁵ + 8⁷ + 2¹¹ + 3¹³ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3728821) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1623 + ... + 3176.

It is an arithmetic number, because the mean of its divisors is an integer number (364800).

Almost surely, 2^3728823 is an apocalyptic number.

3728823 is a deficient number, since it is larger than the sum of its proper divisors (2107977).

3728823 is a wasteful number, since it uses less digits than its factorization.

3728823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4846.

The product of its digits is 16128, while the sum is 33.

The square root of 3728823 is about 1931.0160537914. The cubic root of 3728823 is about 155.0686203276.

The spelling of 3728823 in words is "three million, seven hundred twenty-eight thousand, eight hundred twenty-three".