8561628 has 36 divisors (see below), whose sum is σ = 22782760. Its totient is φ = 2703456.

The previous prime is 8561627. The next prime is 8561633. The reversal of 8561628 is 8261658.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (36).

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).

It is a junction number, because it is equal to n+sod(n) for n = 8561592 and 8561601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8561627) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5575 + ... + 6942.

Almost surely, 2^8561628 is an apocalyptic number.

It is an amenable number.

8561628 is an abundant number, since it is smaller than the sum of its proper divisors (14221132).

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

8561628 is a wasteful number, since it uses less digits than its factorization.

8561628 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12546 (or 12541 counting only the distinct ones).

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

The square root of 8561628 is about 2926.0259739107. The cubic root of 8561628 is about 204.5747918594.

The spelling of 8561628 in words is "eight million, five hundred sixty-one thousand, six hundred twenty-eight".