3144728 has 32 divisors (see below), whose sum is σ = 6577200. Its totient is φ = 1400832.

The previous prime is 3144727. The next prime is 3144737. The reversal of 3144728 is 8274413.

It is a self number, because there is not a number n which added to its sum of digits gives 3144728.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3144727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1976 + ... + 3192.

Almost surely, 2^3144728 is an apocalyptic number.

3144728 is a gapful number since it is divisible by the number (38) formed by its first and last digit.

It is an amenable number.

3144728 is an abundant number, since it is smaller than the sum of its proper divisors (3432472).

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

3144728 is a wasteful number, since it uses less digits than its factorization.

3144728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1259 (or 1255 counting only the distinct ones).

The product of its digits is 5376, while the sum is 29.

The square root of 3144728 is about 1773.3380952317. The cubic root of 3144728 is about 146.5078952207.

The spelling of 3144728 in words is "three million, one hundred forty-four thousand, seven hundred twenty-eight".