2628740 has 12 divisors (see below), whose sum is σ = 5520396. Its totient is φ = 1051488.

The previous prime is 2628737. The next prime is 2628749. The reversal of 2628740 is 478262.

It can be written as a sum of positive squares in 2 ways, for example, as 1110916 + 1517824 = 1054^2 + 1232^2 .

It is not an unprimeable number, because it can be changed into a prime (2628749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 65699 + ... + 65738.

It is an arithmetic number, because the mean of its divisors is an integer number (460033).

2^2628740 is an apocalyptic number.

2628740 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2628740 is an abundant number, since it is smaller than the sum of its proper divisors (2891656).

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

2628740 is a wasteful number, since it uses less digits than its factorization.

2628740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131446 (or 131444 counting only the distinct ones).

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

The square root of 2628740 is about 1621.3389528411. The cubic root of 2628740 is about 138.0116912310.

The spelling of 2628740 in words is "two million, six hundred twenty-eight thousand, seven hundred forty".