3185428 has 12 divisors (see below), whose sum is σ = 5651380. Its totient is φ = 1570752.

The previous prime is 3185423. The next prime is 3185437. The reversal of 3185428 is 8245813.

It can be written as a sum of positive squares in 2 ways, for example, as 1258884 + 1926544 = 1122^2 + 1388^2 .

It is a hoax number, since the sum of its digits (31) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3185428.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3185423) 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, 5163 + ... + 5746.

Almost surely, 2^3185428 is an apocalyptic number.

It is an amenable number.

3185428 is a deficient number, since it is larger than the sum of its proper divisors (2465952).

3185428 is a wasteful number, since it uses less digits than its factorization.

3185428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10986 (or 10984 counting only the distinct ones).

The product of its digits is 7680, while the sum is 31.

The square root of 3185428 is about 1784.7767367377. The cubic root of 3185428 is about 147.1372374407.

The spelling of 3185428 in words is "three million, one hundred eighty-five thousand, four hundred twenty-eight".