7270440 has 64 divisors (see below), whose sum is σ = 22334400. Its totient is φ = 1892352.

The previous prime is 7270421. The next prime is 7270447. The reversal of 7270440 is 440727.

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

It is a self number, because there is not a number n which added to its sum of digits gives 7270440.

It is not an unprimeable number, because it can be changed into a prime (7270447) 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, 4456 + ... + 5864.

It is an arithmetic number, because the mean of its divisors is an integer number (348975).

Almost surely, 2^7270440 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 7270440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11167200).

7270440 is an abundant number, since it is smaller than the sum of its proper divisors (15063960).

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

7270440 is a wasteful number, since it uses less digits than its factorization.

7270440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466 (or 1462 counting only the distinct ones).

The product of its (nonzero) digits is 1568, while the sum is 24.

The square root of 7270440 is about 2696.3753447916. The cubic root of 7270440 is about 193.7255480762.

The spelling of 7270440 in words is "seven million, two hundred seventy thousand, four hundred forty".