3975228 has 36 divisors (see below), whose sum is σ = 10487568. Its totient is φ = 1267200.

The previous prime is 3975217. The next prime is 3975239. The reversal of 3975228 is 8225793.

It is a happy number.

3975228 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (3975217) and next prime (3975239).

It is a tau number, because it is divible by the number of its divisors (36).

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 + 9² + 7⁵ + 5⁴ + 2¹⁸ + 2²¹ + 8⁴ .

It is a junction number, because it is equal to n+sod(n) for n = 3975192 and 3975201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1573 + ... + 3228.

Almost surely, 2^3975228 is an apocalyptic number.

It is an amenable number.

3975228 is an abundant number, since it is smaller than the sum of its proper divisors (6512340).

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

3975228 is a wasteful number, since it uses less digits than its factorization.

3975228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4834 (or 4829 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 3975228 is about 1993.7973818821. The cubic root of 3975228 is about 158.4117339027.

It can be divided in two parts, 397 and 5228, that added together give a square (5625 = 75²).

The spelling of 3975228 in words is "three million, nine hundred seventy-five thousand, two hundred twenty-eight".