2731628 has 24 divisors (see below), whose sum is σ = 5115600. Its totient is φ = 1276224.

The previous prime is 2731621. The next prime is 2731637. The reversal of 2731628 is 8261372.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 2731628.

It is not an unprimeable number, because it can be changed into a prime (2731621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19583 + ... + 19721.

It is an arithmetic number, because the mean of its divisors is an integer number (213150).

2^2731628 is an apocalyptic number.

It is an amenable number.

2731628 is a deficient number, since it is larger than the sum of its proper divisors (2383972).

2731628 is a wasteful number, since it uses less digits than its factorization.

2731628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 194 (or 158 counting only the distinct ones).

The product of its digits is 4032, while the sum is 29.

The square root of 2731628 is about 1652.7637459722. The cubic root of 2731628 is about 139.7892748166.

It can be divided in two parts, 273 and 1628, that multiplied together give a palindrome (444444).

The spelling of 2731628 in words is "two million, seven hundred thirty-one thousand, six hundred twenty-eight".