5681628 has 18 divisors (see below), whose sum is σ = 14361984. Its totient is φ = 1893864.

The previous prime is 5681623. The next prime is 5681629. The reversal of 5681628 is 8261865.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 157823 = 5681628 / (5 + 6 + 8 + 1 + 6 + 2 + 8).

It is a junction number, because it is equal to n+sod(n) for n = 5681592 and 5681601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5681623) 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 5 ways as a sum of consecutive naturals, for example, 78876 + ... + 78947.

It is an arithmetic number, because the mean of its divisors is an integer number (797888).

Almost surely, 2^5681628 is an apocalyptic number.

It is an amenable number.

5681628 is an abundant number, since it is smaller than the sum of its proper divisors (8680356).

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

5681628 is a wasteful number, since it uses less digits than its factorization.

5681628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157833 (or 157828 counting only the distinct ones).

The product of its digits is 23040, while the sum is 36.

The square root of 5681628 is about 2383.6165799054. The cubic root of 5681628 is about 178.4394729228.

The spelling of 5681628 in words is "five million, six hundred eighty-one thousand, six hundred twenty-eight".