7406240 has 48 divisors (see below), whose sum is σ = 17939880. Its totient is φ = 2887680.

The previous prime is 7406233. The next prime is 7406251. The reversal of 7406240 is 426047.

It can be written as a sum of positive squares in 4 ways, for example, as 2226064 + 5180176 = 1492^2 + 2276^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5996 + ... + 7124.

Almost surely, 2^7406240 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 7406240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8969940).

7406240 is an abundant number, since it is smaller than the sum of its proper divisors (10533640).

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

7406240 is a wasteful number, since it uses less digits than its factorization.

7406240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1185 (or 1177 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 7406240 is about 2721.4407948732. The cubic root of 7406240 is about 194.9242747829.

The spelling of 7406240 in words is "seven million, four hundred six thousand, two hundred forty".