5186440 has 32 divisors (see below), whose sum is σ = 13337280. Its totient is φ = 1778112.

The previous prime is 5186407. The next prime is 5186443. The reversal of 5186440 is 446815.

5186440 = 581² + 582² + ... + 595².

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a junction number, because it is equal to n+sod(n) for n = 5186399 and 5186408.

It is not an unprimeable number, because it can be changed into a prime (5186443) 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, 8982 + ... + 9541.

It is an arithmetic number, because the mean of its divisors is an integer number (416790).

Almost surely, 2^5186440 is an apocalyptic number.

It is an amenable number.

5186440 is an abundant number, since it is smaller than the sum of its proper divisors (8150840).

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

5186440 is a wasteful number, since it uses less digits than its factorization.

5186440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18541 (or 18537 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 5186440 is about 2277.3756826663. The cubic root of 5186440 is about 173.0970976419.

The spelling of 5186440 in words is "five million, one hundred eighty-six thousand, four hundred forty".