7405940 has 24 divisors (see below), whose sum is σ = 15611400. Its totient is φ = 2951168.

The previous prime is 7405927. The next prime is 7405943. The reversal of 7405940 is 495047.

It can be written as a sum of positive squares in 4 ways, for example, as 1779556 + 5626384 = 1334^2 + 2372^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7405943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6536 + ... + 7584.

It is an arithmetic number, because the mean of its divisors is an integer number (650475).

Almost surely, 2^7405940 is an apocalyptic number.

It is an amenable number.

7405940 is an abundant number, since it is smaller than the sum of its proper divisors (8205460).

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

7405940 is a wasteful number, since it uses less digits than its factorization.

7405940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1411 (or 1409 counting only the distinct ones).

The product of its (nonzero) digits is 5040, while the sum is 29.

The square root of 7405940 is about 2721.3856764523. The cubic root of 7405940 is about 194.9216428549.

The spelling of 7405940 in words is "seven million, four hundred five thousand, nine hundred forty".