7432240 has 40 divisors (see below), whose sum is σ = 17574768. Its totient is φ = 2922240.

The previous prime is 7432231. The next prime is 7432261. The reversal of 7432240 is 422347.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4119 + ... + 5641.

Almost surely, 2^7432240 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 7432240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8787384).

7432240 is an abundant number, since it is smaller than the sum of its proper divisors (10142528).

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

7432240 is a wasteful number, since it uses less digits than its factorization.

7432240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1597 (or 1591 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 22.

The square root of 7432240 is about 2726.2134912732. The cubic root of 7432240 is about 195.1521057360.

Adding to 7432240 its reverse (422347), we get a palindrome (7854587).

The spelling of 7432240 in words is "seven million, four hundred thirty-two thousand, two hundred forty".