7402240 has 36 divisors (see below), whose sum is σ = 17733744. Its totient is φ = 2960384.

The previous prime is 7402237. The next prime is 7402253. The reversal of 7402240 is 422047.

It is a nialpdrome in base 14.

It is a zygodrome in base 2.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1612 + ... + 4171.

It is an arithmetic number, because the mean of its divisors is an integer number (492604).

Almost surely, 2^7402240 is an apocalyptic number.

It is an amenable number.

7402240 is an abundant number, since it is smaller than the sum of its proper divisors (10331504).

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

7402240 is an equidigital number, since it uses as much as digits as its factorization.

7402240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5804 (or 5790 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 19.

The square root of 7402240 is about 2720.7057907830. The cubic root of 7402240 is about 194.8891765636.

Adding to 7402240 its reverse (422047), we get a palindrome (7824287).

The spelling of 7402240 in words is "seven million, four hundred two thousand, two hundred forty".