3826728 has 24 divisors (see below), whose sum is σ = 10364250. Its totient is φ = 1275552.

The previous prime is 3826723. The next prime is 3826729. The reversal of 3826728 is 8276283.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 3090564 + 736164 = 1758^2 + 858^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a d-powerful number, because it can be written as 3¹³ + 8⁴ + 2¹⁶ + 6² + 7² + 2¹⁶ + 8⁷ .

It is a junction number, because it is equal to n+sod(n) for n = 3826692 and 3826701.

It is not an unprimeable number, because it can be changed into a prime (3826721) 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, 26503 + ... + 26646.

Almost surely, 2^3826728 is an apocalyptic number.

It is an amenable number.

3826728 is an abundant number, since it is smaller than the sum of its proper divisors (6537522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3826728 is a wasteful number, since it uses less digits than its factorization.

3826728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53161 (or 53154 counting only the distinct ones).

The product of its digits is 32256, while the sum is 36.

The square root of 3826728 is about 1956.2024435114. The cubic root of 3826728 is about 156.4140872487.

It can be divided in two parts, 3826 and 728, that added together give a palindrome (4554).

The spelling of 3826728 in words is "three million, eight hundred twenty-six thousand, seven hundred twenty-eight".