5191440 has 80 divisors (see below), whose sum is σ = 16332288. Its totient is φ = 1363968.

The previous prime is 5191429. The next prime is 5191441. The reversal of 5191440 is 441915.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 5191440.

It is not an unprimeable number, because it can be changed into a prime (5191441) 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 15 ways as a sum of consecutive naturals, for example, 23169 + ... + 23391.

Almost surely, 2^5191440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5191440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8166144).

5191440 is an abundant number, since it is smaller than the sum of its proper divisors (11140848).

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

5191440 is a wasteful number, since it uses less digits than its factorization.

5191440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336 (or 330 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 5191440 is about 2278.4731729823. The cubic root of 5191440 is about 173.1527046680.

The spelling of 5191440 in words is "five million, one hundred ninety-one thousand, four hundred forty".