5186640 has 40 divisors (see below), whose sum is σ = 16079328. Its totient is φ = 1383040.

The previous prime is 5186627. The next prime is 5186651. The reversal of 5186640 is 466815.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 5186598 and 5186607.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10566 + ... + 11045.

Almost surely, 2^5186640 is an apocalyptic number.

It is an amenable number.

5186640 is an abundant number, since it is smaller than the sum of its proper divisors (10892688).

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

5186640 is a wasteful number, since it uses less digits than its factorization.

5186640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21627 (or 21621 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The square root of 5186640 is about 2277.4195924335. The cubic root of 5186640 is about 173.0993226090.

The spelling of 5186640 in words is "five million, one hundred eighty-six thousand, six hundred forty".