5140640 has 72 divisors (see below), whose sum is σ = 12961620. Its totient is φ = 1926144.

The previous prime is 5140633. The next prime is 5140643. The reversal of 5140640 is 460415.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 4857616 + 283024 = 2204^2 + 532^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5140643) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57716 + ... + 57804.

Almost surely, 2^5140640 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 5140640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6480810).

5140640 is an abundant number, since it is smaller than the sum of its proper divisors (7820980).

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

5140640 is a wasteful number, since it uses less digits than its factorization.

5140640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 142 (or 115 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 5140640 is about 2267.2979513068. The cubic root of 5140640 is about 172.5860664120.

The spelling of 5140640 in words is "five million, one hundred forty thousand, six hundred forty".