2187628 has 24 divisors (see below), whose sum is σ = 4136832. Its totient is φ = 1008384.

The previous prime is 2187613. The next prime is 2187629. The reversal of 2187628 is 8267812.

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a junction number, because it is equal to n+sod(n) for n = 2187593 and 2187602.

It is not an unprimeable number, because it can be changed into a prime (2187629) 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, 3301 + ... + 3907.

It is an arithmetic number, because the mean of its divisors is an integer number (172368).

2^2187628 is an apocalyptic number.

It is an amenable number.

2187628 is a deficient number, since it is larger than the sum of its proper divisors (1949204).

2187628 is a wasteful number, since it uses less digits than its factorization.

2187628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 679 counting only the distinct ones).

The product of its digits is 10752, while the sum is 34.

The square root of 2187628 is about 1479.0632170398. The cubic root of 2187628 is about 129.8148844559.

It can be divided in two parts, 21876 and 28, that added together give a square (21904 = 148²).

The spelling of 2187628 in words is "two million, one hundred eighty-seven thousand, six hundred twenty-eight".