7407240 has 64 divisors (see below), whose sum is σ = 23535360. Its totient is φ = 1858560.

The previous prime is 7407229. The next prime is 7407241. The reversal of 7407240 is 427047.

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 7407240.

It is not an unprimeable number, because it can be changed into a prime (7407241) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 225 + ... + 3855.

It is an arithmetic number, because the mean of its divisors is an integer number (367740).

Almost surely, 2^7407240 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 7407240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11767680).

7407240 is an abundant number, since it is smaller than the sum of its proper divisors (16128120).

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

7407240 is a wasteful number, since it uses less digits than its factorization.

7407240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3662 (or 3658 counting only the distinct ones).

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

The square root of 7407240 is about 2721.6245148808. The cubic root of 7407240 is about 194.9330473631.

The spelling of 7407240 in words is "seven million, four hundred seven thousand, two hundred forty".